Celsius to Fahrenheit Converter

Type a temperature in degrees Celsius to see it in Fahrenheit and in Kelvin.

Updated October 27, 2026

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Formula

°F = °C × 9 ÷ 5 + 32

K = °C + 273.15

Worked example

20 °C × 9 ÷ 5 = 36, and 36 + 32 = 68 °F. In Kelvin that is 20 + 273.15 = 293.15 K.

Celsius	Fahrenheit	Kelvin
-40	-40	233.15
0	32	273.15
20	68	293.15
37	98.6	310.15
100	212	373.15

Frequently asked questions

What is the formula to convert Celsius to Fahrenheit?

Multiply by 9, divide by 5, then add 32. For 20 °C: 20 × 9 ÷ 5 = 36, plus 32 is 68 °F.

What is 37 degrees Celsius in Fahrenheit?

37 °C is 98.6 °F, the traditional average human body temperature.

At what temperature are Celsius and Fahrenheit equal?

At -40. Because -40 × 9 ÷ 5 + 32 = -40, minus 40 °C is the same as minus 40 °F.

How do I convert Celsius to Kelvin?

Add 273.15. Water freezes at 0 °C, which is 273.15 K, and boils at 100 °C, which is 373.15 K. The lowest possible value is -273.15 °C, or 0 K.

How we calculate

Celsius to Fahrenheit Converter

Formula

Worked example

Frequently asked questions

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