Engineering Calculators
Professional-grade calculators for engineers. Convert units, calculate material properties, and solve technical problems with precision.
All Engineering Calculators
Showing 24 of 41 calculators
Kinetic Energy Calculator
Calculate kinetic energy (KE = ½mv²) for any object given its mass and velocity, or solve the e...
Voltage Drop Calculator
Calculate voltage drop in electrical wiring for single-phase and three-phase circuits. Determine ...
Tile Calculator
Calculate exactly how many tiles you need for any floor, wall, bathroom or backsplash project. En...
Stair Calculator
Calculate stair dimensions including rise, run, number of steps, stringer length, and angle. Desi...
Solar Panel Calculator
Calculate solar panel system size, daily energy output, number of panels needed, and estimate pot...
Concrete Calculator
Calculate concrete volume and materials needed for your construction project. Supports slabs, foo...
Resistance Calculator
Calculate total resistance for series and parallel resistor circuits, decode 4-band and 5-band re...
Electrical Power Calculator
Calculate electrical power, current, voltage, or resistance from any two known values. Supports D...
Potential Energy Calculator
Calculate gravitational potential energy (PE = mgh) or elastic potential energy (PE = ½kx²). So...
Paint Calculator
Calculate exactly how much paint you need for any interior or exterior project. Enter room dimens...
Ohm's Law Calculator
Free Ohm's Law calculator. Solve for voltage (V), current (I), resistance (R), or power (P) using...
Mulch Calculator
Calculate exactly how much mulch you need for any garden bed, tree ring, flower border or playgro...
Fuel Consumption Calculator
Calculate your vehicle's fuel consumption, trip cost, and CO2 emissions. Supports both metric (L/...
Force Calculator
Calculate force using Newton's second law (F=ma), net force from multiple forces, weight, frictio...
RC Circuit Calculator
Calculate RC circuit time constant (τ), cutoff frequency, capacitor charge/discharge time, and v...
HVAC Load Calculator
Calculate HVAC heating and cooling load requirements using Manual J simplified methodology. Deter...
Gear Ratio Calculator
Calculate gear ratios, output speed, and torque multiplication for gear trains, sprockets, pulley...
Material Strength Calculator
Calculate normal stress (σ = F/A), shear stress (τ = V/A), bending stress (σ = Mc/I), strain (...
Frequency and Wavelength Calculator
Convert between frequency, wavelength, wave speed and period for any wave type. Supports light, s...
Air Flow Calculator (CFM)
Calculate air flow rate (CFM), duct velocity, and duct sizing for HVAC systems. Determine ventila...
EV Charging Calculator
Calculate EV charging time, cost, and energy usage for any electric vehicle. Compare Level 1, Lev...
Wire Size Calculator
Calculate the correct wire size for your electrical installation. Find AWG or metric wire gauge b...
Electricity Cost Calculator
Calculate electricity costs for any appliance based on wattage, usage hours, and your electricity...
Battery Calculator
Calculate battery capacity, runtime, charging time, and battery bank sizing. Supports multiple ba...