Where do these numbers come from?
- NISTSP 811 exact unit definitions (1 in = 25.4 mm, 1 lb = 453.59237 g)current edition
- NISTHandbook 44, weights and measurescurrent edition
- King Arthur BakingIngredient Weight Chart (kitchen tools)retrieved Oct 23, 2026
Checked Oct 23, 2026. °F = °C × 9/5 + 32, so 180 °C = 356 °F; ovens usually round this to 350 °F.
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100 °F = 37.8 °C
Worked example
100 − 32 = 68; 68 × 5/9 = 37.8 °C.
Normal human body temperature is about 37 °C (98.6 °F); air temperatures this high are a heat-health concern.
Nearby values
| Fahrenheit | Celsius |
|---|---|
| 80 °F | 26.7 °C |
| 85 °F | 29.4 °C |
| 90 °F | 32.2 °C |
| 95 °F | 35 °C |
| 100 °F | 37.8 °C |
| 105 °F | 40.6 °C |
| 110 °F | 43.3 °C |
| 115 °F | 46.1 °C |
| 120 °F | 48.9 °C |
Frequently asked questions
What is 100 °F in Celsius?
37.8 °C.