All Calculators

Use our free retirement calculator to plan your financial future. Calculate how much you need to retire, see if you're on track, and find out when ...

Use our free salary calculator to convert gross to net salary, hourly to annual pay, and see your take-home pay after taxes and deductions.

Use our free investment calculator to see how your investments will grow over time. Calculate investment returns with compound interest, dividends,...

Use our free tax calculator to estimate your income tax, see your tax bracket, and calculate net salary after federal and state taxes with deductions.

Use our free savings calculator to see how your money will grow over time with compound interest. Calculate future value, monthly contributions nee...

Convert between 150+ world currencies with live exchange rates. Get real-time forex rates for USD, EUR, VND, GBP, JPY and more.

Use our free tip calculator to calculate tip amount, total bill with tip, and split among friends. Perfect for restaurants, delivery, hotels, and a...

Use our free split bill calculator to divide expenses among friends. Split evenly or unevenly, add tip and tax, and see exactly what each person owes.

Use our free discount calculator to calculate sale prices, discount percentages, and savings instantly. Works with single discounts, double discoun...

Use our free percentage calculator to calculate percent of a number, percentage increase, decrease, change, and difference instantly. Perfect for d...

Use our free profit margin calculator to calculate gross profit margin, markup percentage, and find selling price from cost. Perfect for business p...

Use our free amortization calculator to generate detailed loan payment schedules showing principal and interest breakdown for each payment. Works f...

Use our free VAT calculator to add VAT to a net price, remove VAT from a gross price, or calculate the VAT amount. Works with any VAT rate for UK, ...

Use our free loan calculator to calculate your monthly payment, EMI, and total interest for any loan. Works for personal loans, home loans, car loa...

Use our free interest calculator to calculate simple interest, compound interest, and total interest earned or paid. Works for savings accounts, lo...

Use our free ROI calculator to calculate return on investment for any investment type. Calculate ROI percentage, total profit, and annualized retur...

Use our free debt payoff calculator to create a personalized debt repayment plan. Compare debt snowball vs debt avalanche strategies, see how extra...

Calculate your monthly mortgage payment with down payment using our free home loan calculator. Get instant results for mortgage cost, interest rate...

Use our free capital gains tax calculator to estimate federal and state tax on selling stocks, real estate, crypto, or other investments. Computes ...

Use our free stock profit calculator to compute net profit, profit percentage, and total return from any stock trade. Includes commissions, dividen...

Use our free life insurance calculator to find out how much coverage you really need. Computes coverage three ways (income replacement, DIME method...

Use our free health insurance calculator to estimate your total yearly cost including monthly premium, deductible, coinsurance, and out-of-pocket m...

Use our free inflation calculator to see how inflation erodes purchasing power over time. Calculate past, present, and future value of money using ...

Use our free net worth calculator to calculate your total net worth by adding up all assets and subtracting liabilities. Track your financial posit...

Use our free emergency fund calculator to find out how much you need based on monthly expenses and job stability. See current progress, amount stil...

Use our free break even calculator to find the break-even point in units and revenue from fixed costs, variable cost per unit, and price per unit. ...

Use our free refinance calculator to find out if refinancing your mortgage will save you money. Computes new monthly payment, monthly savings, brea...

Use our free real estate tax calculator to estimate annual property tax, monthly property tax payment, and total real estate costs including transf...

Use our free 401k calculator to project your 401(k) balance at retirement, including employer match, salary growth, and inflation. See how much you...

Use our free dividend yield calculator to compute annual dividend yield, total dividend income, and per-payment amount for any dividend-paying stoc...

Use our free cap rate calculator to compute the capitalization rate, net operating income (NOI), gross rent multiplier, and operating expense ratio...

Use our free car insurance calculator to estimate your monthly and annual premium based on driver age, vehicle value, driving record, coverage type...

Use our free P/E ratio calculator to compute price-to-earnings ratio, earnings yield, and PEG ratio for any stock. Compare against industry average...

Use our free home insurance calculator to estimate dwelling coverage, personal property, liability, and annual premium based on rebuild cost, squar...

Use our free marginal tax rate calculator to find your 2024 federal tax bracket, marginal rate, effective rate, and take-home pay. Includes a compl...

Use our free home buying cost calculator to estimate the total upfront cash you need to buy a house, including down payment, closing costs, inspect...

Use our free Roth IRA calculator to project your tax-free retirement balance. Enter your age, annual contribution, expected return, and see the pow...

Use our free home selling cost calculator to estimate total selling costs and net proceeds. Includes agent commission (5-6%), closing costs, repair...

Use our free WACC calculator to compute weighted average cost of capital from market values of equity and debt, cost of equity (direct or CAPM-deri...

Use our free beta calculator to compute stock beta from 3 methods: historical returns dataset, covariance/variance directly, or convert unlevered b...

Use our free debt to equity ratio calculator to compute D/E, debt ratio, equity ratio, and financial leverage from a company's balance sheet. Inclu...

Use our free effective tax rate calculator to find your overall tax burden as a percentage of gross income. Includes federal, state, local income t...

Use our free cash on cash return calculator to compute the actual return on the cash you invest in a rental property. Includes mortgage payments, d...

Use our free CAGR calculator to compute the compound annual growth rate of any investment, stock, or business metric. Enter beginning value, ending...

Use our free current ratio calculator to assess a company's short-term liquidity. Computes current ratio, working capital, quick ratio (acid test),...

Use our free inheritance tax calculator to estimate federal estate tax based on estate value, debts, charitable contributions, and state inheritanc...

Use our free Sharpe Ratio calculator to measure risk-adjusted return for portfolios, funds, and investments. Computes excess return over risk-free ...

Use our free rental yield calculator to compute gross and net rental yield, plus cash yield after mortgage payments. Perfect for buy-to-let investo...

Use our free Traditional IRA calculator to project your tax-deferred retirement balance. Enter your age, annual contribution, expected return, and ...

Use our free disability insurance calculator to figure out how much income protection you need and what it will cost. Computes monthly benefit, tot...

Use our free NPV calculator to compute net present value, discounted cash flow, profitability index, and payback period for any project or investme...

Use our free corporate tax calculator to estimate federal and state corporate income tax based on revenue, expenses, depreciation, and deductions. ...

Use our free quick ratio (acid test) calculator to measure a company's ability to meet short-term obligations using only liquid assets — cash, ma...

Use our free bond yield calculator to compute current yield, yield to maturity (YTM), and total return on any coupon bond. Enter face value, coupon...

Use our free IRR calculator to compute the internal rate of return for any project or investment. Enter initial investment and yearly cash flows to...

Use our free inventory turnover calculator to measure how efficiently your business manages inventory. Computes turnover ratio and Days Inventory O...

Use our free money transfer fee calculator to find the true all-in cost of an international transfer. Combines flat fees, percentage fees, receivin...

Use our free Cash Conversion Cycle (CCC) calculator to measure how long your cash is tied up in operations. Inputs: DIO + DSO − DPO directly, or ...

Use our free currency hedging calculator to size your forex hedge, estimate hedge cost, and compare hedged versus unhedged outcomes. Built for impo...

Use our free inflation-adjusted return calculator to find your real rate of return after accounting for inflation. Computes both the Fisher equatio...

Use our free purchasing power calculator to see how inflation erodes the real value of money over time. Convert between past, present, and future p...

Use our free cross rate calculator to derive any forex cross currency rate from two quoted pairs. Built for FX traders, treasurers, and importers w...

Use our free real interest rate calculator with the Fisher equation to convert nominal interest into inflation-adjusted real returns. Find out what...

Use our free forward rate calculator to price an FX forward contract using interest rate parity. Enter the spot rate, domestic and foreign interest...

Convert between different units of measurement including length, weight, temperature, volume, area, speed, time, data storage, energy, and pressure.

A full-featured scientific calculator with trigonometry, logarithms, exponents, roots, factorials, and more. Supports degrees/radians and shows ste...

Calculate the average (mean), median, mode, range, and other statistics for any set of numbers. Supports weighted averages and step-by-step explana...

Solve quadratic equations (ax² + bx + c = 0) instantly. Find real and complex roots, discriminant, vertex, and axis of symmetry with detailed step...

Add, subtract, multiply, and divide fractions with ease. Simplify fractions, convert to decimals or percentages, and see step-by-step solutions.

Calculate, simplify, and solve ratios and proportions. Find equivalent ratios, convert to fractions or percentages, and compare ratios with step-by...

Calculate the area of any shape instantly. Find area of triangles, circles, rectangles, squares, trapezoids, ellipses and more with step-by-step fo...

Generate random numbers between any two values. Supports multiple numbers, no duplicates option, integers or decimals. Perfect for raffles, games, ...

Solve any triangle by entering sides and angles. Calculate area, perimeter, height, angles, and identify triangle type. Uses Law of Sines, Law of C...

Calculate the hours and minutes between two times. Perfect for work hours, payroll calculations, timesheets, and shift scheduling. Supports break d...

Calculate powers and exponents including squares, cubes, negative exponents, and fractional powers. Get step-by-step solutions with exponent rules ...

Calculate the Least Common Multiple (LCM) and Greatest Common Divisor (GCD/HCF) of two or more numbers. See step-by-step solutions using Euclidean ...

Check if a number is prime, find prime factors, generate prime numbers in a range, and discover the next or previous prime. Get step-by-step primal...

Calculate logarithms with any base, natural log (ln), log base 10, log base 2, and antilog. Get step-by-step solutions and learn how logarithms work.

Convert numbers between Binary (base 2), Octal (base 8), Decimal (base 10), Hexadecimal (base 16), and any base from 2-36. See step-by-step convers...

Calculate Fibonacci numbers, generate sequences, check if a number is Fibonacci, and explore the golden ratio. See step-by-step solutions with mult...

Calculate factorial (n!), double factorial (n!!), permutations (nPr), and combinations (nCr). See step-by-step solutions with formulas and explanat...

Calculate speed, distance, or time using the fundamental motion formula. Convert between units like km/h, mph, and m/s. Perfect for travel planning...

Calculate standard deviation, variance, and mean from your data set with step-by-step explanation. Supports both sample and population standard dev...

Calculate the distance between two points in 2D, 3D, or on a map using latitude and longitude. Supports Euclidean, Manhattan, and great-circle (Hav...

Calculate derivatives of any function with step-by-step solutions. Supports polynomials, trigonometric, exponential, and logarithmic functions. Fin...

Add, subtract, or find the difference between times in hours, minutes, and seconds. Supports HH:MM:SS format, AM/PM clock times, work hours with br...

Compute definite and indefinite integrals with step-by-step solutions. Enter any expression to find its antiderivative symbolically, or evaluate a ...

Calculate probabilities for any scenario with step-by-step solutions. Supports basic, conditional, binomial, dice, and card probability calculation...

Perform all matrix operations with step-by-step solutions. Add, subtract, multiply matrices, find the determinant, inverse, transpose, and row-redu...

Check if any year is a leap year, find the next or previous leap year, or list all leap years within a date range. Explains the full Gregorian cale...

Evaluate, simplify, and analyze boolean expressions with step-by-step solutions. Generate truth tables, find minterms and maxterms, create SOP/POS ...

Perform all complex number operations with step-by-step solutions. Add, subtract, multiply, divide complex numbers, find modulus, argument, conjuga...

Calculate the perimeter of any shape including rectangle, square, triangle, circle, parallelogram, trapezoid, ellipse, rhombus, and regular polygon...

Calculate the volume and surface area of any 3D shape including cube, sphere, cylinder, cone, pyramid, prism, ellipsoid, and torus. See step-by-ste...

Calculate with mixed numbers instantly. Add, subtract, multiply, and divide mixed fractions with step-by-step solutions. Convert between mixed numb...

Calculate your Body Mass Index (BMI), check where you fall on the BMI chart, find your ideal weight range, and understand what your BMI means for y...

Calculate your pregnancy due date, find out how many weeks pregnant you are, track your pregnancy timeline week by week, and estimate conception da...

Calculate your ovulation date, predict your fertile window, and find the best days to conceive based on your menstrual cycle. Track multiple cycles...

Calculate the best times to sleep and wake up based on 90-minute sleep cycles. Find your optimal bedtime to wake up refreshed, or discover when to ...

Calculate your optimal daily water intake based on body weight, activity level, and climate. Get personalized hydration recommendations to stay hea...

Calculate your daily macronutrient needs (protein, carbs, fat) based on your TDEE, body composition, and fitness goals. Get personalized macro spli...

Calculate how many calories you should eat per day for weight loss, muscle gain, or maintenance. Our free calorie calculator uses BMR and TDEE to g...

Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals. Get personalized protein recommendations for m...

Calculate your body fat percentage using the accurate Navy method with waist and neck measurements. Find your lean body mass, fat mass, and see how...

Calculate your ideal body weight based on height, age, and gender. Our free ideal weight calculator uses multiple scientific formulas (Devine, Robi...

Calculate your Total Daily Energy Expenditure (TDEE) to know exactly how many calories you burn each day. Essential for weight loss, muscle gain, o...

Calculate your Basal Metabolic Rate (BMR) - the number of calories your body burns at rest. Use multiple formulas including Mifflin-St Jeor and Har...

Calculate your estimated blood alcohol content (BAC) based on weight, gender, number of drinks, and time elapsed. See how long until you're sober a...

Calculate your running pace, finish time, or distance instantly. Enter any two values to find the third. Includes race finish time predictions for ...

Use our free calories burned calculator to estimate calories burned during 25+ exercises and activities. Uses scientifically-accurate MET values. E...

Use our free blood pressure calculator to interpret your BP reading. Get the AHA 2017 category (Normal, Elevated, Hypertension Stage 1/2, Crisis), ...

Use our free max heart rate calculator with 4 proven formulas (Tanaka, Fox, Gulati for women, Nes) plus 5 training zones for fat burn, cardio, and ...

Use our free heart rate zone calculator with the Karvonen formula to compute 5 training zones (Recovery, Fat Burn, Aerobic, Threshold, Maximum) fro...

Use our free blood sugar calculator to convert glucose readings between mg/dL and mmol/L, estimate A1C from average glucose, and classify your read...

Use our free VO2 max calculator to estimate your maximum oxygen uptake using 4 validated test methods: Cooper 12-minute run, Rockport 1-mile walk, ...

Use our free cardiovascular risk calculator to estimate your 10-year risk of heart attack or stroke based on age, sex, cholesterol, blood pressure,...

Use our free cholesterol calculator to analyze your lipid panel. Computes LDL via the Friedewald equation, total/HDL and LDL/HDL ratios, non-HDL ch...

Use our free waist-hip ratio (WHR) calculator to assess body fat distribution and metabolic risk. Computes WHR and waist-to-height ratio, classifie...

Use our free vitamin and mineral calculator to look up the daily Recommended Dietary Allowance (RDA) for all 13 essential vitamins and 12 essential...

Use our free sodium calculator to find your daily sodium limit per FDA and AHA guidelines, adjusted for hypertension, kidney disease, age, and athl...

Use our free carbohydrate calculator to determine your optimal daily carb intake based on body weight, total calories, activity level, and goal (lo...

Use our free muscle mass calculator to estimate skeletal muscle mass and skeletal muscle mass index (SMI) using the Lee 2000 equation. Screens for ...

Use our free lean body mass (LBM) calculator with three formulas — Boer, James, and Hume — plus body-fat-based calculation if you know your BF%...

Use our free fiber calculator to determine your daily fiber recommendation based on age, sex, and calorie intake. Returns total, soluble, and insol...

Use our free EKG calculator to compute QTc using both Bazett and Fridericia formulas, derive heart rate from RR interval, and classify PR and QRS d...

Use our free fat intake calculator to compute your daily fat grams based on calorie needs and goals. Covers total, saturated, unsaturated, and omeg...

Use our free stroke volume calculator to compute SV from end-diastolic and end-systolic volumes (or from cardiac output and heart rate) plus ejecti...

Use our free cardiac output calculator to compute heart output in L/min from heart rate and stroke volume. Optionally includes cardiac index normal...

Use our free rest time calculator to find the optimal rest period between sets based on your training goal (strength, hypertrophy, endurance, or po...

Calculate your vehicle's fuel consumption, trip cost, and CO2 emissions. Supports both metric (L/100km) and imperial (MPG) units with fuel cost est...

Calculate solar panel system size, daily energy output, number of panels needed, and estimate potential energy savings. Essential for planning sola...

Calculate voltage drop in electrical wiring for single-phase and three-phase circuits. Determine if wire size meets NEC 3% voltage drop recommendat...

Calculate stair dimensions including rise, run, number of steps, stringer length, and angle. Design safe, code-compliant stairs for decks, interior...

Calculate total resistance for series and parallel resistor circuits, decode 4-band and 5-band resistor color codes, and solve for resistance using...

Calculate concrete volume and materials needed for your construction project. Supports slabs, footings, columns, and custom shapes with material br...

Calculate air flow rate (CFM), duct velocity, and duct sizing for HVAC systems. Determine ventilation requirements and optimize duct design.

Calculate electrical power, current, voltage, or resistance from any two known values. Supports DC circuits, single-phase AC, and three-phase AC sy...

Calculate battery capacity, runtime, charging time, and battery bank sizing. Supports multiple battery types including lithium-ion, lead-acid, and ...

Calculate resonant frequency for LC circuits, RLC circuits (with Q factor and bandwidth), and mechanical spring-mass systems. Supports multiple uni...

Calculate torque from force and lever arm distance, convert between torque units, and calculate power from torque and RPM.

Calculate heat transfer through materials using conduction, convection, and radiation formulas. Determine R-value, U-value, and heat loss for build...

Calculate force using Newton's second law (F=ma), net force from multiple forces, weight, friction, centripetal force, spring force (Hooke's Law), ...

Calculate roof pitch from rise and run, convert pitch to degrees, find rafter length, and determine the slope percentage. Essential for roofing, fr...

Calculate HVAC heating and cooling load requirements using Manual J simplified methodology. Determine BTU capacity, tonnage, and system sizing base...

Calculate the correct wire size for your electrical installation. Find AWG or metric wire gauge based on current, voltage, and distance with voltag...

Calculate EV charging time, cost, and energy usage for any electric vehicle. Compare Level 1, Level 2, and DC fast charging speeds with your electr...

Calculate beam deflection, bending stress, and maximum load capacity for simply supported and cantilever beams. Supports wood and steel beam analysis.

Calculate normal stress (σ = F/A), shear stress (τ = V/A), bending stress (σ = Mc/I), strain (ε = σ/E), and factor of safety for structural an...

Calculate the correct HVAC duct size based on airflow (CFM), velocity, and duct type. Supports round, rectangular, and oval duct calculations with ...

Calculate gear ratios, output speed, and torque multiplication for gear trains, sprockets, pulleys, and transmissions. Supports single and compound...

Calculate fluid flow rate, velocity, pressure drop, and Reynolds number for pipes. Determine if flow is laminar or turbulent and estimate head loss.

Calculate velocity, speed, distance, or time using v = d/t. Solve all four kinematic equations with unit conversion between m/s, km/h, mph, and ft/s.

Calculate pressure using force and area (P = F/A), fluid pressure by depth (P = ρgh), or convert between psi, bar, kPa, MPa, atm, and torr.

Calculate power factor, real power (kW), reactive power (kVAR), apparent power (kVA), and capacitor sizing for power factor correction in AC electr...

Use our free capacitance calculator for parallel-plate capacitors, series and parallel combinations, RC time constants, and stored energy calculati...

Use our free engineering tolerance calculator to compute dimensional limits, tolerance width, and shaft/hole fit type (clearance, transition, or in...

Calculate your final grade, current course grade, or what score you need on your final exam. Supports weighted assignments, multiple categories, an...

Calculate your GPA (Grade Point Average) for high school or college. Supports weighted and unweighted calculations, multiple grading scales, and cu...

Use our free language proficiency calculator to estimate your CEFR level (A1-C2) plus IELTS and TOEFL score equivalents based on your vocabulary si...

Calculate your exact age in years, months, and days from your date of birth. Find out how old you are today, your age in days, weeks, hours, and co...

Calculate days between two dates, add or subtract days from a date, find business days excluding weekends, and get accurate date differences in yea...

Convert time between different time zones instantly. Compare multiple cities, plan international meetings, and see current time around the world wi...

Count words, characters, sentences, paragraphs, and estimate reading time instantly. Live updates as you type. Supports with/without spaces, readab...

Check how strong your password is with our free password strength calculator. See entropy bits, estimated crack time, and get personalized tips to ...

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more instantly. One-click conve...

Convert Unix timestamps to human-readable dates and dates to Unix timestamps instantly. Shows current time, supports seconds and milliseconds, UTC ...

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly. Compare hash values, copy results, and verify data integrity. All processing ...

Decode and inspect JWT tokens instantly. View header, payload, claims, expiration time, and issued time. Color-coded display of all three JWT parts...

Test and debug regular expressions with live match highlighting, capture groups, flags support, and replace mode. Essential developer tool for buil...

Encode or decode URLs, query strings, and special characters instantly. Supports percent encoding (RFC 3986), UTF-8, component encoding, and full U...

Encode text to Base64 or decode Base64 to readable text instantly. Supports standard and URL-safe Base64, UTF-8, and one-click copy. All processing...

Format, validate, and minify JSON online. Pretty print with customizable indentation, syntax highlighting, error detection, and copy-to-clipboard. ...

Parse and translate cron expressions to human-readable text instantly. See next run times, validate syntax, and understand each field. Supports sta...

Calculate AI token count, cost, and usage for OpenAI GPT-4o, Claude, Gemini, and other LLMs. Convert words to tokens, estimate API costs, and compa...

Convert between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Also calculate temperature differences and thermal expansion (ΔL = α·L₀·�...

Convert colors between HEX, RGB, HSL, HSV, and CMYK formats instantly. Live color preview, one-click copy, and built-in color picker for designers ...

Convert between all digital data units instantly — bits, bytes, KB, MB, GB, TB, PB and binary IEC units (KiB, MiB, GiB, TiB). Enter any value in ...

A fully-featured Pomodoro timer with customizable work/break durations, visual progress ring, session counter, daily focus stats, alarm sound, and ...

Calculate travel time from distance and speed, find your arrival time from a departure time, or solve for any variable in the speed-distance-time r...

Free online countdown timer with alarm sound, full-screen mode, and event date countdown. Set any duration in hours, minutes, and seconds. Perfect ...

Enter your birthday to instantly discover your Western zodiac sun sign and Chinese zodiac animal. Get your element, ruling planet, key personality ...

Plan your study schedule by deadline, estimate total exam prep hours by topic difficulty and knowledge level, or break today's study time into focu...

Estimate the full cost of any trip — road trips, flights, or vacations. Enter your travel details to get a complete cost breakdown by category an...

Estimate your CO2 carbon footprint from driving, flights, and home energy use. Get a full emissions breakdown by category and see how many trees it...

Generate strong, random passwords instantly. Choose your length and character types — uppercase, lowercase, numbers, and symbols. Includes real-t...

Calculate when you'll finish a program, course, or project. Enter total hours needed and weekly availability to get your estimated completion date ...