Celsius ↔ Fahrenheit Converter
Convert Celsius to Fahrenheit or Fahrenheit to Celsius instantly. Free temperature converter with common reference points.
Common Reference Points
| Description | °C | °F |
|---|---|---|
| Absolute zero | −273.15 | −459.67 |
| Water freezes | 0 | 32 |
| Body temperature | 37 | 98.6 |
| Water boils | 100 | 212 |
How to Convert Celsius to Fahrenheit
To convert Celsius to Fahrenheit: multiply by 9/5 (1.8), then add 32. Formula: °F = (°C × 9/5) + 32. A quick mental trick: double the Celsius temperature and add 30 to get an approximate Fahrenheit value.
What is the formula to convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit temperature, then multiply by 5/9. Formula: °C = (°F − 32) × 5/9. For example, 72°F = (72 − 32) × 5/9 = 22.2°C.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at −40 degrees. That is, −40°C = −40°F. This is the only point where the two scales intersect.
What is normal body temperature in Celsius and Fahrenheit?
Normal human body temperature is approximately 37°C (98.6°F). However, normal can range from about 36.1°C (97°F) to 37.2°C (99°F) depending on the individual and time of day.