Unit Converter
Convert length, weight, temperature, area, volume, speed and data units instantly.
① Select a category ② Choose units and enter a value ③ Copy the result
7 Categories
Length, weight, temperature, area, volume, speed, data
Bidirectional
Edit either field to convert in both directions
Precision
Up to 8 significant digits
Free Online Unit Converter
This unit converter supports 7 categories: length (m, km, ft, mi), weight (kg, lb, oz), temperature (°C, °F, K), area (m², km², ha, ac), volume (L, mL, gal), speed (km/h, mph, m/s) and data (B, KB, MB, GB). Instant bidirectional conversion between all common units.
Frequently Asked Questions
It supports 7 categories: length (m, km, cm, mm, mi, yd, ft, in), weight (kg, g, mg, lb, oz, t, st), temperature (°C, °F, K), area (m², km², ha, ac, ft²), volume (L, mL, m³, gal, qt), speed (m/s, km/h, mph, knot) and data (B, KB, MB, GB, TB).
You can edit either the "from" or "to" field. Changing the left value converts to the right, and vice versa — so you can convert in both directions without swapping units.
Conversions use standardized factors (ISO, NIST). Temperature uses exact formulas. Results are shown with up to 8 significant digits.
Temperature conversions are non-linear. To convert °F to °C: subtract 32, multiply by 5/9. To convert °C to K: add 273.15. This tool handles all temperature formulas automatically.
Unit systems vary: the US uses the imperial system (miles, gallons, pounds) while most countries use the metric system (km, litres, kg). This converter supports both.
Yes. The data category supports bytes (B), kilobytes (KB, Kib), megabytes (MB, Mib), gigabytes (GB, Gib), terabytes and petabytes using both SI and binary prefixes.
Over 50 units across 7 categories. Length: 9, Weight: 7, Temperature: 3, Area: 9, Volume: 9, Speed: 5, Data: 9.