Fahrenheit to Kelvin Converter
Quick answer: Fahrenheit to Kelvin: use K = (°F − 32) × 5/9 + 273.15. For example, 37 °F is 275.9278 K.
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Use the Fahrenheit to Kelvin Converter
Fahrenheit to Kelvin formula and what each symbol means
K = (°F − 32) × 5/9 + 273.15
| Symbol | Meaning |
|---|---|
| °F | Degree Fahrenheit |
| K | Kelvin |
Fahrenheit to Kelvin examples
0 °F
0 °F = 255.3722 K.
37 °F
37 °F = 275.9278 K.
100 °F
100 °F = 310.9278 K.
Fahrenheit compared with Kelvin
These two scales agree at exactly 574.5875: 574.5875 °F = 574.5875 K. Use that fixed point as a quick sanity check on any result.
About Fahrenheit and Kelvin
Degree Fahrenheit (°F): Fahrenheit degree used mainly in the United States: water freezes at 32 °F and boils at 212 °F. Kelvin (K): The SI base unit of thermodynamic temperature, where 0 K is absolute zero.
Where Fahrenheit to Kelvin conversions are used
Cooking, HVAC settings and lab protocols often quote the same temperature in two scales. Weather forecasts, ovens and body temperature use different scales depending on the country.
How to calculate Fahrenheit to Kelvin step by step
- Enter the value in °F.
- Apply the formula K = (°F − 32) × 5/9 + 273.15.
- The result is in K. Use the reverse formula to go back.
Popular temperature conversions
How to read your Fahrenheit to Kelvin result
Temperature scales have different zero points, so conversions use a multiply-and-add formula, not one factor alone.
| FAHRENHEIT | KELVIN |
|---|---|
| -40 | 233.15 |
| -10 | 249.8167 |
| 0 | 255.3722 |
| 20 | 266.4833 |
| 37 | 275.9278 |
| 50 | 283.15 |
| 100 | 310.9278 |
| 212 | 373.15 |
Kelvin to Fahrenheit: quick table
| KELVIN | FAHRENHEIT |
|---|---|
| -40 | -531.67 |
| -10 | -477.67 |
| 0 | -459.67 |
| 15 | -432.67 |
| 25 | -414.67 |
| 37 | -393.07 |
| 60 | -351.67 |
| 90 | -297.67 |
Common mistakes when calculating Fahrenheit to Kelvin
- Using 273 instead of 273.15 when you need accurate kelvin values.
- Using a single multiplier: this conversion is not a simple scale, so follow the full formula K = (°F − 32) × 5/9 + 273.15.
Fahrenheit to Kelvin FAQ
What is the formula to convert Fahrenheit to Kelvin?
K = (°F − 32) × 5/9 + 273.15.
What is the formula to convert Kelvin to Fahrenheit?
°F = (K − 273.15) × 9/5 + 32.
What is 0 °F in K?
0 °F equals 255.3722 K.
What is a degree Fahrenheit (°F)?
Fahrenheit degree used mainly in the United States: water freezes at 32 °F and boils at 212 °F.
How can I estimate Fahrenheit to Kelvin in my head?
These two scales agree at exactly 574.5875: 574.5875 °F = 574.5875 K. Use that fixed point as a quick sanity check on any result.
What is -10 °F in Kelvin?
-10 °F = 249.8167 K, using K = (°F − 32) × 5/9 + 273.15.
What is 60 °F in Kelvin?
60 °F = 288.7056 K, using K = (°F − 32) × 5/9 + 273.15.
What is 30 °F in Kelvin?
30 °F = 272.0389 K, using K = (°F − 32) × 5/9 + 273.15.
How many decimals should I keep when converting °F to K?
Match the precision of your original measurement. For example, 275.9278 K rounds to 276 K at 3 significant figures; keep more digits only for engineering or scientific work.
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the kelvin