Fahrenheit to Celsius Converter
Change °F to °C, with the steps shown on a thermometer. Take away 32, then multiply by 5/9.
°F to °C
37 °C
98.6 degrees Fahrenheit is 37 degrees Celsius.
The same amount in other units
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Why does this work?
All steps as text
Tip: press ← and → to move between steps, or click any step.
The formula: C = (F − 32) × 5/9
The Fahrenheit scale starts 32 degrees higher (water freezes at 32 °F = 0 °C), so take away 32 first. Then each Fahrenheit degree is 5/9 of a Celsius degree, so multiply by 5/9. For 98.6 °F: 98.6 − 32 = 66.6, and 66.6 × 5/9 = 37 °C.
A quick estimate: take away 30 and halve. 70 °F → 40 ÷ 2 = 20 °C, close to the exact 21.1 °C.
Fahrenheit to Celsius chart
| Fahrenheit | Celsius | Example |
|---|---|---|
| −40 °F | −40 °C | the same on both scales |
| 0 °F | −17.8 °C | |
| 32 °F | 0 °C | water freezes |
| 50 °F | 10 °C | |
| 60 °F | 15.6 °C | |
| 68 °F | 20 °C | room temperature |
| 70 °F | 21.1 °C | |
| 80 °F | 26.7 °C | |
| 90 °F | 32.2 °C | a hot day |
| 98.6 °F | 37 °C | body temperature |
| 100 °F | 37.8 °C | |
| 212 °F | 100 °C | water boils |
| 300 °F | 148.9 °C | low oven |
| 325 °F | 162.8 °C | |
| 350 °F | 176.7 °C | moderate oven |
| 375 °F | 190.6 °C | |
| 400 °F | 204.4 °C | hot oven |
| 425 °F | 218.3 °C | |
| 450 °F | 232.2 °C | very hot oven |
Celsius rounded to 1 decimal place where it doesn’t end.
Questions
What is 350 °F in Celsius?
About 176.7 °C: 350 − 32 = 318, and 318 × 5/9 ≈ 176.67. Recipes usually round it to 180 °C.
What is 100 °F in Celsius?
About 37.8 °C: 100 − 32 = 68, and 68 × 5/9 ≈ 37.78.
Why multiply by 5/9?
Between freezing and boiling there are 180 Fahrenheit degrees but only 100 Celsius degrees, so a Fahrenheit degree is 100/180 = 5/9 of a Celsius degree.
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