Converters & Conversion Calculators – Convert Any Unit Instantly!
Instantly convert between unit systems for area, energy, force, length, weight, speed, time, volume, power and more. Conversion calculators for science, math, trades, education, and daily life.
Popular Unit & Measurement Converters
Area Converter
Convert acres, sq m, sq ft, hectares and more area units.
Length Converter
Meters, inches, feet, miles, and every length measurement fast!
Weight Converter
Kilograms, grams, pounds, ounces, tons—all weight classes.
Volume Converter
Liters, gallons, pints, cups—switch liquid and solid volumes.
Energy Converter
Joule, calorie, BTU, kWh, and all major energy units.
Power Converter
Watts, horsepower, BTU/h, erg/s—speedy power comparisons.
Force Converter
Convert Newtons, dynes, kgf, lbf for engineering or physics.
Pressure Converter
Bar, psi, atmospheres, Pascals and other pressure units.
Velocity Converter
km/h, m/s, mi/h, ft/s and any common speed format.
Time Converter
Seconds, minutes, hours, weeks, and other time units.
Megabytes Converter
Switch between MB, KB, GB, bytes for digital files/data.
Download Speed Converter
Bits/s, kbps, MB/s, GB/s–web or network speed conversion.
Base Converter
Convert between decimal, binary, octal, hexadecimal systems.
Roman Numerals Converter
Switch numbers to and from Roman numerals in one click.
Temperature Converter
Celsius, Fahrenheit, Kelvin conversions for science, cooking, or travel.