What is Unit Converter?
Unit Converter is a free online tool that converts between metric, imperial, and other measurement units instantly. Supports length, weight, temperature, volume, speed, area, and digital storage.
How to use
- Select a measurement category (Length, Weight, Temperature, etc.)
- Choose the units to convert from and to
- Type a value — the result updates as you type
- Click the swap button (↔) to reverse the conversion
- Copy the result with one click
Supported categories
- Length — mm, cm, m, km, in, ft, yd, mi
- Weight — mg, g, kg, metric ton, oz, lb, stone
- Temperature — Celsius, Fahrenheit, Kelvin
- Volume — mL, L, US/UK gallon, quart, cup, fl oz, tbsp, tsp
- Speed — m/s, km/h, mph, knots, ft/s
- Area — m², km², ft², yd², acre, hectare, mi²
- Digital Storage — bit, byte, KB, MB, GB, TB
Limitations
- Maximum input value: 10¹⁵
- Uses standard conversion factors (NIST reference values)
- Digital storage uses binary units (1 KB = 1,024 bytes)
- Temperature conversions use exact formulas (not approximate)