Recipes in cups, a height in feet, a room size in square feet, a temperature in Fahrenheit — converting units comes up constantly. Enter one value and see it in every common unit of the same kind at once.
Length, weight, area, volume and temperature are covered, in both metric and imperial units.
How to use
- Choose length, weight, area, volume or temperature.
- Type a value and pick its unit.
- Read the value in every other unit.
Why use Deftivo
All units at once
No need to pick a target unit — every conversion is listed together.
US and UK units
US and UK gallons are listed separately, as are US cups and spoons.
Precise
Exact conversion factors are used, and very small or large numbers switch to scientific notation.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 cm. A foot is 30.48 cm and a mile is 1.609344 km.
How do I convert Celsius to Fahrenheit?
°F = °C × 9 ÷ 5 + 32. So 20 °C is 68 °F, and 100 °C is 212 °F.
Why are there two gallons?
A US gallon is 3.785 L and a UK (imperial) gallon is 4.546 L.