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Browse 46 free new tools for instant, accurate results.
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Showing 46 calculators
BMI Calculator
Calculate your Body Mass Index (BMI), check where you fall on the BMI chart, find your ideal weig...
Grade Calculator
Calculate your final grade, current course grade, or what score you need on your final exam. Supp...
Pregnancy Calculator
Calculate your pregnancy due date, find out how many weeks pregnant you are, track your pregnancy...
Age Calculator
Calculate your exact age in years, months, and days from your date of birth. Find out how old you...
Date Calculator
Calculate days between two dates, add or subtract days from a date, find business days excluding ...
Tip Calculator
Use our free tip calculator to calculate tip amount, total bill with tip, and split among friends...
TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) to know exactly how many calories you burn e...
Triangle Calculator
Solve any triangle by entering sides and angles. Calculate area, perimeter, height, angles, and i...
Hours Calculator
Calculate the hours and minutes between two times. Perfect for work hours, payroll calculations, ...
Logarithm Calculator
Calculate logarithms with any base, natural log (ln), log base 10, log base 2, and antilog. Get s...
Mortgage Calculator
Calculate your monthly mortgage payment with down payment using our free home loan calculator. Ge...
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_cas...
JSON Formatter
Format, validate, and minify JSON online. Pretty print with customizable indentation, syntax high...
Time Calculator
Add, subtract, or find the difference between times in hours, minutes, and seconds. Supports HH:M...
Completion Time Calculator
Calculate when you'll finish a program, course, or project. Enter total hours needed and weekly a...
Lottery Tax
Calculate how much you actually keep from a Powerball, Mega Millions, or any lottery jackpot afte...
Paint
Calculate exactly how much paint you need for any interior or exterior project. Enter room dimens...
Diff Checker
Compare two pieces of text, code, JSON, YAML or any plain-text file side by side. The diff checke...
Ohm's Law Calculator
Free Ohm's Law calculator. Solve for voltage (V), current (I), resistance (R), or power (P) using...
Subnet
Calculate subnet mask, network address, broadcast address, host range, and usable hosts from any ...
Tile
Calculate exactly how many tiles you need for any floor, wall, bathroom or backsplash project. En...
Overtime Pay
Calculate overtime pay, time and a half, and double-time from your hourly rate and hours worked. ...
Circle Calculator
Free circle calculator — enter any one value (radius, diameter, circumference, or area) and ins...
RSU
Estimate RSU vesting value, federal and state tax withholding, FICA, and net cash after tax for a...
Markdown to HTML
Convert Markdown to clean HTML instantly with GitHub Flavored Markdown support, live side-by-side...
Mulch
Calculate exactly how much mulch you need for any garden bed, tree ring, flower border or playgro...
Fence
Calculate posts, panels, gates, concrete and total cost for any residential or commercial fence p...
Quarterly Tax Calculator
Estimate your quarterly federal income tax and self-employment tax payments using IRS Form 1040-E...
Cat Age
Convert your cat's age into human years using the AAHA (American Animal Hospital Association) sta...
Pool
Pool calculator for volume in gallons or liters, chlorine and shock dose, salt for SWG systems, p...
Carpet
Calculate exactly how much carpet you need for any room or commercial space. Enter room dimension...
Time Card Calculator
Free time card calculator with weekly timesheet grid, lunch break deductions, FLSA overtime (40h/...
Conception Calculator
Estimate your conception date from a due date, last period (LMP), or ultrasound dating scan. Free...
Compound Interest
Use our free compound interest calculator to see how your investments grow over time with daily, ...
Working Days Calculator
Use our free working days calculator to count the number of business days between two dates or ad...
DTI Calculator
Calculate your debt-to-income (DTI) ratio in seconds. See your front-end and back-end DTI against...
Readability Calculator
Paste any text and instantly get all 5 industry-standard readability scores: Flesch Reading Ease ...
Stamp Duty Calculator
Calculate UK Stamp Duty Land Tax (SDLT) instantly. Free stamp duty calculator covers first-time b...
Heat Index Calculator
Calculate the heat index (apparent or feels-like temperature) from air temperature and relative h...
JSON to YAML
Convert JSON to YAML online — fast, free, browser-side. Paste JSON, get clean YAML with correct...
HELOC Calculator
Calculate how much home equity you can borrow with a HELOC, the interest-only payment during the ...
CSV to JSON
Convert CSV to JSON online — fast, free, browser-side. Paste CSV, get clean JSON arrays with ty...
YAML to JSON
Convert YAML to JSON online — fast, free, browser-side. Paste any YAML and get clean JSON with ...
Cholesterol Calculator
Free LDL cholesterol calculator that analyzes your lipid panel: computes LDL via the Friedewald e...
BSA Calculator
Calculate Body Surface Area (BSA) in m² from height and weight using all five clinical formulas ...
WBGT Calculator
Calculate Wet Bulb Globe Temperature (WBGT) — the heat stress index used by NCAA, NATA, OSHA, N...