This tool converts Fahrenheit to Celsius the moment you type — 0 °F = -17.77777778 °C, and 100 °F = 37.77777778 °C. It's the same trusted math behind the full unit converter, focused on the single degrees Fahrenheit-to-degrees Celsius conversion so you get the answer without any distractions.
The formula is °C = (°F − 32) × 5/9 — subtract 32, then multiply by five-ninths. Every calculation runs client-side, so your numbers never leave your device, and there's no sign-up, no limit, and nothing to install.
| degrees Fahrenheit (°F) | degrees Celsius (°C) |
|---|---|
| -40 °F | -40 °C |
| 0 °F | -17.77777778 °C |
| 32 °F | 0 °C |
| 50 °F | 10 °C |
| 68 °F | 20 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.77777778 °C |
| 212 °F | 100 °C |
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