An absolute scale where 0 K is absolute zero. 0 °C equals 273.15 K.

Can I enter negative values?

Yes, for Celsius and Fahrenheit. Kelvin can't be negative — its zero is absolute zero.

Is data sent anywhere?

No, everything is computed in your browser; nothing is sent to a server.

How do I convert Fahrenheit to Celsius?

Subtract 32, then multiply by 5/9. For example, 100 °F ≈ 37.8 °C. The converter does it for you.

What temperature is the same in Celsius and Fahrenheit?

−40°. It's the one point where the two scales meet — −40 °C equals −40 °F.

Temperature converter

Temperature converter online: convert Celsius to Fahrenheit and back, as well as to Kelvin. Celsius, Fahrenheit and Kelvin in a second.

Value

From

To

20 °C

68 °F

How to use it

1

Enter a temperature

A number in degrees — it can be negative.

2

Choose the scales

Which scale to convert from and to.

3

See the result

The conversion happens automatically.

Why it's useful

Temperature is measured on different scales: Celsius is familiar to most, Fahrenheit is used in the US, and Kelvin in science. Reading foreign weather forecasts, recipes or appliance manuals constantly requires converting degrees.

This converter instantly translates between Celsius, Fahrenheit and Kelvin using exact formulas. Just enter a value and pick the scales — no need to remember the formulas.

FAQ

Use °F = °C × 9/5 + 32. For example, 20 °C = 68 °F. The converter does this automatically.

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