Convert any value between metric and imperial units. Pick a category, type a number, and see the result instantly – plus a table converting your value into every other unit in that category.
Common conversions
- 1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 mile = 1.609 km
- 1 kg = 2.2046 lb, 1 lb = 453.6 g, 1 stone = 14 lb
- °F = °C × 9/5 + 32, so 20 °C = 68 °F and 100 °C = 212 °F
- 1 US gallon = 3.785 L, 1 UK gallon = 4.546 L
Questions
Does it use US or UK gallons?
Both are listed separately – US gallons and imperial (UK) gallons, along with US and UK pints and fluid ounces.
What is the difference between MB and MiB?
MB (megabyte) is 1,000,000 bytes; MiB (mebibyte) is 1,048,576 bytes. Operating systems often show MiB but label it MB.
How accurate are the conversions?
Conversion factors use exact international definitions where they exist, and results are shown to up to 10 significant digits.