How to convert units
- Pick a category: length, weight, temperature, volume, cooking, speed, area or data size.
- Choose the two units, then type a number in either box. The other one updates as you type.
- Tap Swap to flip the direction.
The page remembers the last category you used, and the pair of units you picked for each one.
Questions
How many ml are in a cup? A US cup is 236.6 ml. Many recipes outside the US use a metric cup of 250 ml, so the cooking category has both.
What’s the difference between US and UK gallons? A US gallon is 3.785 liters and a UK (imperial) gallon is 4.546 liters.
What’s the difference between MB and MiB? A megabyte (MB) is 1,000,000 bytes, as drive makers count. A mebibyte (MiB) is 1,048,576 bytes, which is what many operating systems call a megabyte.
How accurate is it? Results are shown to about ten significant digits, from the exact definitions of each unit.