Tools
Unit Converter
Enter a number and choose two units. The converter covers length, weight, temperature, and volume. US customary units are selected first: inch, pound, Fahrenheit, and the US gallon.
The metric switch changes those starting units to centimeter, kilogram, Celsius, and liter. Both directions stay available. Empty input is an error next to the field, not a blank result pretending to be zero.
Convert a value
Converted value
Enter a value.
Unit questions
What is 32 °F in Celsius?
0 °C. The formula is Celsius = (Fahrenheit − 32) × 5/9.
Is the gallon the US gallon or the imperial gallon?
The US gallon. One US gallon is 3.785411784 liters. The imperial gallon is not on this page.
What does the metric switch do?
It selects metric units first. You can still convert in either direction after you change the menus.