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How to use the Unit Converter
- Select a category (length, weight, temperature, speed, etc.).
- Enter a value and choose the source unit.
- Select the target unit, the result updates instantly.
- The table below shows the full conversion matrix for the most common units in the selected category.
Available categories
| Category | Example units |
|---|---|
| Length | mm, cm, m, km, inch, foot, yard, mile, nautical mile |
| Weight / Mass | mg, g, kg, tonne, ounce, pound, stone |
| Volume | mL, cL, L, m³, fl oz (US/UK), cup, pint, quart, gallon |
| Temperature | Celsius, Fahrenheit, Kelvin |
| Area | mm², cm², m², km², in², ft², yd², acre, hectare |
| Speed | m/s, km/h, mph, knot, ft/s |
| Data / Storage | bit, byte, KB, MB, GB, TB (binary and decimal) |
| Pressure | Pa, kPa, MPa, bar, psi, atm, mmHg |
| Energy | J, kJ, cal, kcal, kWh, BTU, eV |
| Time | ms, s, min, h, day, week, month, year |
Temperature conversion formulas
Temperature is the only category that does not convert through a simple multiplication:
- °C → °F: (°C × 9/5) + 32
- °F → °C: (°F − 32) × 5/9
- °C → K: °C + 273.15
- K → °C: K − 273.15