Home › Unit Conversion › Degrees Fahrenheit to Degrees Celsius
Degrees Fahrenheit to Degrees Celsius (°F to °C)
Convert degrees Fahrenheit to degrees Celsius with the formula °C = (°F − 32) × 5/9. Conversion table and worked examples, with JSON API and MCP access.
Formula
°C = (°F − 32) × 5/9
°C = (°F − 32) × 5/9 — reverse: °F = °C × 9/5 + 32
Non-linear conversion: the formula above is applied directly (no single multiplication factor).
Worked examples
- 37 °F = 2.77778 °C
- 100 °F = 37.7778 °C
- -40 °F = -40 °C
Degrees Fahrenheit to degrees Celsius conversion table
| Degrees Fahrenheit (°F) | Degrees Celsius (°C) |
|---|---|
| -40 | -40 |
| -30 | -34.4444 |
| -20 | -28.8889 |
| -10 | -23.3333 |
| 0 | -17.7778 |
| 5 | -15 |
| 10 | -12.2222 |
| 15 | -9.44444 |
| 20 | -6.66667 |
| 25 | -3.88889 |
| 30 | -1.11111 |
| 35 | 1.66667 |
| 37 | 2.77778 |
| 40 | 4.44444 |
| 50 | 10 |
| 60 | 15.5556 |
| 70 | 21.1111 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| 100 | 37.7778 |
| 150 | 65.5556 |
| 200 | 93.3333 |
FAQ
What is the formula to convert degrees Fahrenheit to degrees Celsius?
°C = (°F − 32) × 5/9. For example, 37 °F = 2.77778 °C.
How do I convert degrees Celsius back to degrees Fahrenheit?
°F = °C × 9/5 + 32; the degrees Celsius-to-degrees Fahrenheit page applies it directly.
Why is there no single multiplication factor?
Temperature scales have different zero points, so the conversion is an affine formula (scale and offset), not a plain multiplication.
Related conversions
- Degrees Celsius to degrees Fahrenheit (reverse)
- Temperature Converter — all temperature units in one tool
- Degrees Celsius to Kelvin
- Kelvin to Degrees Celsius
- Degrees Fahrenheit to Kelvin
- Kelvin to Degrees Fahrenheit
- Degrees Fahrenheit to Degrees Rankine
- Degrees Rankine to Degrees Fahrenheit
- Kelvin to Degrees Rankine
- Degrees Rankine to Kelvin
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=37&from_unit=F&to_unit=C - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":37,"from_unit":"F","to_unit":"C"} - Markdown: https://tttkmbb.com/conversion/fahrenheit-to-celsius.md · JSON: https://tttkmbb.com/conversion/fahrenheit-to-celsius.json (add
?value=for a result) · Units: /api/v1/units?quantity=temperature - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.