Unit Converter

Length · weight · volume · temperature · speed · area · data · energy · pressure

📏 UNIT
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About this tool

Free Unit Converter — Length, Weight, Volume, Temperature & More

Convert between 9 unit categories and most common units instantly: length, weight, volume, temperature, speed, area, data storage, energy and pressure. Perfect for cooking, DIY, science homework, travel and engineering.

What it is

A multi-category unit converter with a clean interface: pick a category, choose From and To units, enter a value, and the conversion is instant.

Categories covered

  • Length: mm, cm, m, km, in, ft, yd, mi, nm, µm
  • Weight: mg, g, kg, oz, lb, st, t
  • Volume: ml, l, cup, pint, gal, qt, floz, m3
  • Temperature: °C, °F, K
  • Speed: m/s, km/h, mph, knots, ft/s
  • Area: m², km², ft², yd², acres, hectares
  • Data: B, KB, MB, GB, TB, PB
  • Energy: J, kJ, cal, kcal, Wh, kWh, eV
  • Pressure: Pa, kPa, MPa, bar, psi, atm, Torr

Best for

Cooking, DIY, travel, science, engineering, and any task that requires unit conversion between metric and imperial systems.

Frequently asked questions

How many unit categories are there?

Nine: length, weight, volume, temperature, speed, area, data storage, energy and pressure. Many units are supported in total.

Can it convert Celsius to Fahrenheit?

Yes — the temperature category includes Celsius, Fahrenheit and Kelvin. The conversion uses precise scientific formulas, not approximations.

Is there a mobile app?

No app needed. The converter works perfectly in any mobile browser and can be added to your home screen for quick access.

Keywords: unit converter, measurement converter, length converter, weight converter, temperature converter, celsius to fahrenheit, kg to lbs, km to miles, metric converter, imperial converter.