Converting between metric and imperial, or Celsius and Fahrenheit, trips everyone up eventually.
Handy conversions to know
| From | To | Multiply by |
|---|---|---|
| Inches | cm | 2.54 |
| Miles | km | 1.609 |
| Pounds | kg | 0.4536 |
| Ounces | grams | 28.35 |
Temperature formulas
°C → °F: multiply by 9/5, then add 32. °F → °C: subtract 32, then multiply by 5/9. Example: 100°C × 9/5 + 32 = 212°F (boiling point).
How to convert units (step by step)
- Open the Unit Converter.
- Choose a category: length, weight or temperature.
- Enter a value and pick the from/to units, the result is instant.
Quick estimate: for a rough km-to-miles conversion, multiply km by 0.6 (100 km ≈ 62 miles).
Frequently asked questions
How do I convert units here?
Pick a category, type a value, choose the from and to units, and the converted result shows instantly.
What units are supported?
Length (m, km, cm, mm, mi, yd, ft, in), weight (kg, g, mg, lb, oz, t) and temperature (°C, °F, K).
Can I quickly reverse the conversion?
Yes. Use the swap button to flip the from and to units.
Is it free and private?
Yes, free, instant and it runs entirely in your browser.