Convert between length, weight, temperature, volume, speed, data and more.
1000000000
1000000
1000
100
1
0.001
39.370079
3.28084
1.093613
0.00062137
0.00053996
Metric to imperial
A common everyday conversion
100Data sizes
Where 1000 and 1024 differ
1Cooking volumes
Cups, millilitres and spoons
250Metric to imperial
A common everyday conversion
100Data sizes
Where 1000 and 1024 differ
1Cooking volumes
Cups, millilitres and spoons
250Length, weight, temperature, area, volume, speed, time, data, energy or pressure.
Every other unit in that category converts instantly, so you never need a second conversion step.
Each row copies on its own, with the unit symbol included so the meaning travels with the number.
Seeing every unit simultaneously means no second conversion and no chance of picking the wrong direction.
Conversions use the legally defined factors rather than rounded approximations, so repeated conversions do not accumulate error.
The same layout works for kilometres and kilowatt-hours, so there is nothing new to learn when you switch topic.
One converter covering ten measurement families: length, weight, temperature, area, volume, speed, time, data, energy and pressure. Enter a value once and every unit in the category updates at the same time, so you can read off whichever one you need rather than converting twice. Factors use the exact legal definitions where they exist — an inch is exactly 25.4 millimetres, a pound exactly 0.45359237 kilograms — so results do not drift on repeated conversion.
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