Temperature converter

Celsius, Fahrenheit, kelvin and Rankine. Type in either box and the other updates.

20 °C = 68 °F

The same value in every unit

UnitValue
Celsius (°C)20
Fahrenheit (°F)68
Kelvin (K)293.15
Rankine (°R)527.67

Temperature conversions

How it’s calculated

°F = °C × 9/5 + 32, and °C = (°F − 32) × 5/9. Kelvin is °C + 273.15, and Rankine is kelvin × 9/5. Because the scales start at different zero points, temperatures can’t be converted with a single multiplier the way lengths can.