Unit Converters
Convert length, weight, temperature, and more.
A universal converter suite covering length, weight, area, volume, temperature, time, speed, pressure, energy, power, angle, fuel economy, density, force, and torque — accurate, offline-first, and print-ready.
Popular
Most used in Units.
Length Converter
Convert mm, cm, m, km, in, ft, yd, mi, and nautical miles.
Weight Converter
Convert mg, g, kg, ton, oz, lb, and stone.
Area Converter
Convert m², km², acre, hectare, ft², and yd².
Volume Converter
Convert mL, L, m³, ft³, gallons (US/UK), and pints.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin.
Time Converter
Convert milliseconds through years accurately.
Speed Converter
Convert m/s, km/h, mph, and knots.
New
Recently added.
Torque Converter
Convert newton-meters and pound-feet.
Force Converter
Convert newtons, kilonewtons, and pound-force.
Density Converter
Convert kg/m³ and g/cm³.
Fuel Economy Converter
Convert km/L, MPG (US), and MPG (UK).
Angle Converter
Convert degrees and radians.
Power Converter
Convert watts, kilowatts, and horsepower.
Energy Converter
Convert joules, calories, kJ, kcal, Wh, and kWh.
Pressure Converter
Convert Pa, kPa, bar, psi, and atmospheres.
All Unit Converters
15 tools available.
Length Converter
Convert mm, cm, m, km, in, ft, yd, mi, and nautical miles.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin.
Volume Converter
Convert mL, L, m³, ft³, gallons (US/UK), and pints.
Weight Converter
Convert mg, g, kg, ton, oz, lb, and stone.
Area Converter
Convert m², km², acre, hectare, ft², and yd².
Speed Converter
Convert m/s, km/h, mph, and knots.
Time Converter
Convert milliseconds through years accurately.
Angle Converter
Convert degrees and radians.
Density Converter
Convert kg/m³ and g/cm³.
Energy Converter
Convert joules, calories, kJ, kcal, Wh, and kWh.
Force Converter
Convert newtons, kilonewtons, and pound-force.
Fuel Economy Converter
Convert km/L, MPG (US), and MPG (UK).
FAQ
About Unit Converters.
How accurate are the conversions?
All factors are sourced from SI / NIST reference tables and executed through a shared Precision Engine that eliminates floating-point drift. You can choose 0–12 decimal places per conversion, and extreme values switch to scientific notation automatically.
Do conversions require an internet connection?
No. Every converter is 100% client-side and offline-first — nothing is uploaded, cached, or logged, and the tools keep working once the page has loaded.
Which categories are supported?
Length, Weight, Area, Volume, Temperature, Time, Speed, Pressure, Energy, Power, Angle, Fuel Economy, Density, Force, and Torque — with more categories being added.
Can I export or print my conversions?
Yes. Every conversion produces Markdown, CSV, JSON, and plain-text artifacts you can copy, download, print, or share.
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