40 °C to °F
40 °C = 104 °F
°C
To
—
°F
Step-by-Step: 40 °C to °F
- Start with 40 °C
- Multiply by 9/5: 40 x 9/5 = 72
- Add 32: 72 + 32 = 104 °F
40°C (104°F) is extremely hot for outdoor conditions. Heat stroke risk is very high. This exceeds human thermal comfort limits. Outdoor activity should be avoided. In cooking science, this is below the threshold where proteins begin to denature (~60°C).
Did You Know?
The hottest air temperature ever recorded on Earth was 56.7°C (134°F) in Death Valley, California in 1913.
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FAQ
Yes. 40°C (104°F) is extremely dangerous for prolonged exposure. Seek air-conditioned shelter.
Briefly, with hydration and shade, but extended exposure causes heat stroke.