Unit Converters
Unit Converter Tools
Instant metric and imperial conversions for length, weight, temperature, volume, speed, area, mass, density, acceleration, pace, force, torque, pressure, stress, energy and power. Type in any field and all others update live. Free, no sign-up, no ads.
16Converters
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Featured · Unit Converters
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Temperature Converter — Celsius, Fahrenheit & Kelvin
Type a temperature in any scale and see the equivalent in all three instantly. Includes handy reference points — freezing, boiling, body temperature — and the conversion formulas explained. Useful for recipes, weather, science and travel.
Open converter →All Unit Converters
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Length Converter
mm, cm, m, km, inches, feet, yards and miles
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Weight Converter
mg, g, kg, tonnes, oz, lb and stone — with stone + pounds display
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Temperature Converter
Celsius, Fahrenheit and Kelvin with reference points
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Volume Converter
ml, litres, m³, UK fluid ounces, pints, quarts and gallons
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Speed Converter
mph, km/h, m/s, knots, fps and Mach
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Area Converter
sq mm, sq cm, sq m, sq km, sq in, sq ft, sq yd, acres, hectares, sq miles
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Mass Converter
mg, g, kg, tonnes, oz, lb, stone, UK long ton and US short ton
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Density Converter
kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³ and oz/fl oz (UK)
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Acceleration Converter
m/s², cm/s², ft/s², g-force, km/h/s, mph/s and Gal
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Pace & Speed Converter
min/km, min/mile, s/100m, km/h, mph, m/s and knots — with MM:SS display
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Force Converter
Newtons, kilonewtons, pound-force, kilogram-force, dyne and poundal
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Torque Converter
N·m, kN·m, lbf·ft, lbf·in, kgf·m, kgf·cm and ozf·in
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Pressure Converter
Pa, kPa, MPa, bar, mbar, psi, atm, mmHg and inHg
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Stress Converter
Pa, kPa, MPa, GPa, N/mm², psi, ksi, bar and kgf/cm²
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Energy Converter
J, kJ, MJ, Wh, kWh, MWh, cal, kcal, BTU, ft·lbf and eV
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Power Converter
W, kW, MW, GW, hp (bhp), metric PS, BTU/hr, BTU/min and kcal/h
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