100°F = 37.8°C
100 degrees Fahrenheit is equal to 37.8 degrees Celsius.
Convert Fahrenheit to Celsius
Type any value — the converter works in both directions.
100°F = 37.78°C
How the conversion works
The formula to convert Fahrenheit to Celsius is:
°C = (°F − 32) × 5/9
Applied to 100°F:
- 100 − 32 = 68
- 68 × 5/9 = 37.8°C
What does 100°F feel like?
100°F (37.8°C) is very hot — officially dangerous heat in most temperate countries. It is also a number with a double meaning: as a body temperature, 100.4°F (38°C) is the fever threshold, so 100°F is right at the line where doctors start calling it a low-grade fever.
What is 100 degrees Fahrenheit in Celsius?
100 degrees Fahrenheit is equal to 37.8 degrees Celsius (100°F = 37.8°C).
How do you convert 100°F to °C?
Use the formula °C = (°F − 32) × 5/9. Worked out for 100°F: 100 − 32 = 68, 68 × 5/9 = 37.8°C.
What does 100°F feel like?
100°F (37.8°C) is very hot — officially dangerous heat in most temperate countries. It is also a number with a double meaning: as a body temperature, 100.4°F (38°C) is the fever threshold, so 100°F is right at the line where doctors start calling it a low-grade fever.