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Degrees Fahrenheit to Kelvin (°F to K)
Convert degrees Fahrenheit to kelvin with the formula K = (°F + 459.67) × 5/9. Conversion table and worked examples, with JSON API and MCP access.
Formula
K = (°F + 459.67) × 5/9
K = (°F + 459.67) × 5/9 — reverse: °F = K × 9/5 − 459.67
Non-linear conversion: the formula above is applied directly (no single multiplication factor).
Worked examples
- 37 °F = 275.928 K
- 100 °F = 310.928 K
- -40 °F = 233.15 K
Degrees Fahrenheit to kelvin conversion table
| Degrees Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -30 | 238.706 |
| -20 | 244.261 |
| -10 | 249.817 |
| 0 | 255.372 |
| 5 | 258.15 |
| 10 | 260.928 |
| 15 | 263.706 |
| 20 | 266.483 |
| 25 | 269.261 |
| 30 | 272.039 |
| 35 | 274.817 |
| 37 | 275.928 |
| 40 | 277.594 |
| 50 | 283.15 |
| 60 | 288.706 |
| 70 | 294.261 |
| 80 | 299.817 |
| 90 | 305.372 |
| 100 | 310.928 |
| 150 | 338.706 |
| 200 | 366.483 |
FAQ
What is the formula to convert degrees Fahrenheit to kelvin?
K = (°F + 459.67) × 5/9. For example, 37 °F = 275.928 K.
How do I convert kelvin back to degrees Fahrenheit?
°F = K × 9/5 − 459.67; the kelvin-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
- Kelvin to degrees Fahrenheit (reverse)
- Temperature Converter — all temperature units in one tool
- Degrees Celsius to Degrees Fahrenheit
- Degrees Fahrenheit to Degrees Celsius
- Degrees Celsius to Kelvin
- Kelvin to Degrees Celsius
- 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=K - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":37,"from_unit":"F","to_unit":"K"} - Markdown: https://tttkmbb.com/conversion/fahrenheit-to-kelvin.md · JSON: https://tttkmbb.com/conversion/fahrenheit-to-kelvin.json (add
?value=for a result) · Units: /api/v1/units?quantity=temperature - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.