Unit converter
Temperature converter
Convert temperature between Fahrenheit, Celsius, and Kelvin for setpoints, delta-T, and lab specs.
Quick answer
1°C = 33.8°F. To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9; to go the other way, multiply by 9/5 and add 32.
Common temperature conversions
| °F | °C | K |
|---|---|---|
| 0 | -17.78 | 255.37 |
| 32 | 0 | 273.15 |
| 40 | 4.44 | 277.59 |
| 50 | 10 | 283.15 |
| 68 | 20 | 293.15 |
| 72 | 22.22 | 295.37 |
| 90 | 32.22 | 305.37 |
| 100 | 37.78 | 310.93 |
| 140 | 60 | 333.15 |
| 200 | 93.33 | 366.48 |
| 212 | 100 | 373.15 |
About this converter
Convert temperature between Fahrenheit, Celsius, and Kelvin for setpoints, delta-T, and lab specs. It runs in your browser and works offline, so you can convert on the truck or in the field with no signal.
Common on HVAC and Plumbing work.
Temperature conversion FAQ
How do you convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example, 68°F = (68 − 32) × 5/9 = 20°C.
How do you convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32. For example, 20°C = 20 × 9/5 + 32 = 68°F.
What is Celsius in Kelvin?
Add 273.15 to the Celsius value. For example, 25°C = 298.15 K.