Convert length, weight, temperature, volume, speed, area & data storage — instantly
Select a category (length, weight, temperature, etc.), enter your value, and choose the units you want to convert between. The result updates instantly — no need to press a button.
Click the ⇅ swap button to reverse the conversion direction. You can also click any of the popular conversions below the calculator for common lookups.
1 mile = 1.60934 kilometres. To convert miles to km, multiply by 1.609. For a rough mental conversion, multiply by 1.6 or add 60% to the mile figure.
1 kilogram = 2.20462 pounds (lbs). To convert kg to lbs, multiply by 2.2. For stones, divide the lbs result by 14 (e.g., 80 kg = 176 lbs = 12 stone 8 lbs).
Multiply the Celsius temperature by 9/5 (or 1.8), then add 32. For example: 20°C × 1.8 + 32 = 68°F. Key reference points: 0°C = 32°F (freezing), 100°C = 212°F (boiling), 37°C = 98.6°F (body temperature).
1 UK (imperial) gallon = 4.546 litres. Note: a US gallon is smaller at 3.785 litres. Our converter supports both imperial and US gallons.
| From | To | Multiply By |
|---|---|---|
| Miles | Kilometres | 1.60934 |
| Feet | Metres | 0.3048 |
| Inches | Centimetres | 2.54 |
| Yards | Metres | 0.9144 |
| Nautical Miles | Kilometres | 1.852 |
| From | To | Multiply By |
|---|---|---|
| Pounds (lbs) | Kilograms | 0.45359 |
| Stone | Kilograms | 6.35029 |
| Ounces | Grams | 28.3495 |
| Tonnes | Pounds | 2204.62 |
This unit converter handles 7 categories with over 60 unit types. All calculations happen instantly in your browser — no data is sent to any server. Conversion factors are sourced from the International Bureau of Weights and Measures (BIPM) and the National Institute of Standards and Technology (NIST).
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