Quickly convert temperatures between Celsius, Fahrenheit and Kelvin for cooking, science or travel. Enter a value and pick the units to convert.
It runs in your browser, instantly and free.
How to use the Temperature Converter
- Enter a temperature value.
- Choose the from and to units.
- See the converted result.
The formulas behind the conversion
Celsius to Fahrenheit: multiply by 9, divide by 5, add 32, so 20 C is 68 F. Fahrenheit to Celsius reverses it: subtract 32, multiply by 5, divide by 9. Kelvin is Celsius plus 273.15, used in science because 0 K is absolute zero. The converter runs all three both ways instantly.
Anchors worth memorising
A few reference points make foreign forecasts readable at a glance: 0 C is 32 F, freezing. 20 C is 68 F, a pleasant room. 30 C is 86 F, a hot day. 37 C is 98.6 F, body temperature. 100 C is 212 F, boiling water. And minus 40 is the one point where both scales agree.
Common uses
- Reading weather forecasts while travelling
- Converting oven temperatures between recipe systems
- Understanding body temperature across scales
- Science homework and lab work
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Frequently asked questions
Is it free?
Yes, free with no signup.
Which units are supported?
Celsius, Fahrenheit and Kelvin.
Is my input stored?
No. It is converted in your browser.
How accurate is it?
It uses the exact conversion formulas for precise results.