Fahrenheit to Celsius
Common values
| From (°F) | To (°C) |
|---|---|
| 0 | -17.8 |
| 0.2 | -17.7 |
| 0.4 | -17.6 |
| 0.6 | -17.4 |
| 0.8 | -17.3 |
| 1 | -17.2 |
| 1.2 | -17.1 |
| 1.4 | -17.0 |
| 1.6 | -16.9 |
| 1.8 | -16.8 |
| 2 | -16.7 |
To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9.
Formula: °C = (°F − 32) × 5/9
Quick mental check: subtract 30 then halve — gives an approximation within ~2°C.
- 32°F = 0°C (water freezes)
- 98.6°F = 37°C (normal human body temperature)
- 350°F = 177°C (standard baking temperature)
- 0°F = −17.8°C (extremely cold US winter day)
Americans converting Fahrenheit to Celsius need this when traveling internationally, reading European recipes, or using global weather apps. Scientists, researchers, and engineers in the US routinely use Celsius and Kelvin. Medication instructions from international sources may specify Celsius storage temperatures.
US oven dials, meat thermometers, and weather apps use Fahrenheit. However, scientific laboratories, pharmaceutical regulations (FDA), and international trade standards all use Celsius. US home thermostats typically have a Fahrenheit/Celsius toggle hidden in their settings.
Frequently asked questions
- What is 70°F in Celsius?
- 70°F = 21.1°C — a comfortable room temperature.
- Is 40°C a fever in Fahrenheit?
- Yes — 40°C = 104°F, which is a high fever requiring medical attention.
- What is 32°F in Celsius?
- 32°F = 0°C — the freezing point of water.
Related converters: Unit converter