How to use the Unit Converter
- Choose what you want to convert, such as length or weight.
- Pick the “from” and “to” units.
- Type a value — the result and a full conversion table update instantly.
Common conversions
| From | To |
|---|---|
| 1 inch | 2.54 cm |
| 1 foot | 30.48 cm |
| 1 mile | 1.609 km |
| 1 kg | 2.2046 lb |
| 1 litre | 0.2642 US gallons |
| 0 °C | 32 °F |
| 1 acre | 4,046.86 m² |
Temperature formulas
°F = °C × 9/5 + 32 °C = (°F − 32) × 5/9 K = °C + 273.15
Data storage: KB vs KiB
Storage makers use decimal units (1 KB = 1,000 bytes), while many operating systems use binary units (1 KiB = 1,024 bytes). That is why a “1 TB” drive shows about 931 GB on a computer. This converter includes both.
Frequently asked questions
How accurate are the conversions?
Conversion factors use the exact international definitions (for example 1 inch = 2.54 cm exactly), and results are shown to up to 10 significant digits.
Which units are included for area?
Square metres, kilometres, centimetres, feet, inches, yards and miles, plus hectares and acres.