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100 °F in Celsius

  • Ingredient weights: King Arthur Baking chart
  • Updated Oct 23, 2026
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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

FahrenheitCelsius
80 °F26.7 °C
85 °F29.4 °C
90 °F32.2 °C
95 °F35 °C
100 °F37.8 °C
105 °F40.6 °C
110 °F43.3 °C
115 °F46.1 °C
120 °F48.9 °C

Frequently asked questions

What is 100 °F in Celsius?

37.8 °C.