Temperature
Convert Celsius, Fahrenheit, Kelvin and Rankine instantly — with the formula, a conversion chart and checks for absolute zero.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
How to convert temperatures
- Pick the category and the units to convert from and to.
- Type the value — the result and every other unit appear instantly.
- Swap, convert a list, copy or share the result.
About Temperature
Convert Celsius, Fahrenheit, Kelvin and Rankine instantly — with the formula, a conversion chart and checks for absolute zero. The result updates as you type.
Every unit of the category is listed at once, a chart shows common values, and you can swap units, pick the precision or scientific notation, convert a whole list, and share or print the result.
Good for
- Quick everyday conversions
- Engineering, science and homework
- Travel, cooking and shopping
Tip: Use the precision setting to get exactly the number of decimals you need.
Frequently asked questions
Which units are included?
All common metric, imperial and US units for this category — open the From and To lists, or change the category to convert anything else.
Can I see all units at once?
Yes — the result is shown in every unit of the category below the main answer.
Can I convert a list of numbers?
Yes, choose “Convert a list” and paste one value per line.
What is absolute zero?
The lowest possible temperature: 0 K, −273.15 °C or −459.67 °F. The converter warns you if a value is below it.
What is normal body temperature in Fahrenheit?
About 37 °C, which is 98.6 °F.