Temperature conversion
104 °F to °C
40 °C
104 degrees Fahrenheit = 40 degrees Celsius. Exact factor: °C = (°F − 32) × 5/9.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
°C = (°F − 32) × 5/9
Worked example: (104 − 32) × 5/9 = 40 °C.
Values near 104 °F
| °F | °C |
|---|---|
| 103.7 | 39.83 |
| 103.8 | 39.89 |
| 103.9 | 39.94 |
| 104this page | 40 |
| 104.1 | 40.06 |
| 104.2 | 40.11 |
| 104.3 | 40.17 |
Frequently asked
How do you convert degrees Fahrenheit to degrees Celsius?
Apply the formula °C = (°F − 32) × 5/9. Enter any value in the live converter above and the result updates as you type.
What is 104 °F in °C?
104 °F equals 40 °C. The reference table below shows the values immediately around 104 °F.
Why does temperature conversion add 32?
The two scales have different zero points and step sizes. Water freezes at 32 °F but 0 °C, so the formula rescales by 5/9 and shifts by the 32-degree offset.