100°F to Celsius
100 °F is 37.8 °C. 100 °F is just under the common fever threshold of 100.4 °F (38 °C).
37.8 °CCelsius
100 °FFahrenheit
−32 ×5/9formula
Nearby temperatures
| °F | °C |
|---|---|
| 98 °F | 36.7 °C |
| 99 °F | 37.2 °C |
| 100 °F | 37.8 °C |
| 101 °F | 38.3 °C |
| 102 °F | 38.9 °C |
Body-temperature notes follow the common clinical convention (fever ≥ 100.4 °F / 38.0 °C). Readings vary with thermometer type and time of day — general information, not medical advice.
Frequently asked questions
What is 100 degrees Fahrenheit in Celsius?
100°F equals 37.8°C.
Is 100°F a fever?
Not quite — the common fever threshold is 100.4 °F (38.0 °C).