Kelvin to Fahrenheit Converter
Convert Kelvin (K) to Fahrenheit (°F) instantly. Formula: °F = (K - 273.15) × 9/5 + 32.
Temperature Converter
5 units available
1 K = -457.87 °F
Formula:
°F = (K - 273.15) × 9/5 + 32With your value: 1 K = -457.87 °F
Other Kelvin to Fahrenheit conversions
Kelvin to Fahrenheit Conversion Table
| Kelvin (K) | Fahrenheit (°F) |
|---|---|
| 0.5 | -458.77 |
| 1 | -457.87 |
| 2 | -456.07 |
| 5 | -450.67 |
| 10 | -441.67 |
| 15 | -432.67 |
| 20 | -423.67 |
| 25 | -414.67 |
| 50 | -369.67 |
| 100 | -279.67 |
| 250 | -9.67 |
| 500 | 440.33 |
| 1000 | 1,340.33 |
Fahrenheit to Kelvin Conversion Table
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| 0.5 | 255.65 |
| 1 | 255.927778 |
| 2 | 256.483333 |
| 5 | 258.15 |
| 10 | 260.927778 |
| 15 | 263.705556 |
| 20 | 266.483333 |
| 25 | 269.261111 |
| 50 | 283.15 |
| 100 | 310.927778 |
| 250 | 394.261111 |
| 500 | 533.15 |
| 1000 | 810.927778 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Kelvin (K)
Temperature
Traceable to the kelvin, defined by fixing the Boltzmann constant at 1.380 649 × 10⁻²³ J/K. Celsius and Fahrenheit are exact affine transforms of the kelvin scale.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Fahrenheit (°F)
Temperature
°F = °C × 9/5 + 32 exactly; the conversion is affine, not a single multiplying factor.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Kelvin to Fahrenheit
This conversion uses an offset formula, so it cannot be described by a single multiplication factor.
Formula: °F = (K - 273.15) × 9/5 + 32
Reverse: K = (°F - 32) × 5/9 + 273.15
Step-by-Step Example
- Start with your value in Kelvin. For example: 5 K
- Apply °F = (K - 273.15) × 9/5 + 32
- The result is: -450.67 °F
About Kelvin
The Kelvin scale is the SI unit of temperature that starts at absolute zero (−273.15°C). It is used extensively in scientific research.
Fun Fact: At 0 Kelvin (absolute zero), all molecular motion stops. It has never been fully achieved in a laboratory.
Common uses: physics, astronomy, chemistry.
About Fahrenheit
The Fahrenheit scale sets 32°F as the freezing point and 212°F as the boiling point of water. It is primarily used in the United States.
Fun Fact: Daniel Fahrenheit chose 96°F as his upper reference point, based on human body temperature (which he measured slightly inaccurately).
Common uses: weather (US), cooking (US), HVAC.
Frequently Asked Questions
How many Fahrenheit are in 1 Kelvin?
There are exactly -457.87 Fahrenheit in 1 Kelvin.
What is the formula to convert Kelvin to Fahrenheit?
The formula to convert Kelvin to Fahrenheit is: °F = (K - 273.15) × 9/5 + 32. For example, to convert 10 Kelvin to Fahrenheit, you would apply the formula to 10.
What is a Kelvin?
The Kelvin scale is the SI unit of temperature that starts at absolute zero (−273.15°C). It is used extensively in scientific research.
What is a Fahrenheit?
The Fahrenheit scale sets 32°F as the freezing point and 212°F as the boiling point of water. It is primarily used in the United States.
What are the common uses of Kelvin?
The Kelvin is commonly used in physics, astronomy, chemistry.
Related Temperature Conversions
Cite this page
UnitConvertLab. (2026). Kelvin to Fahrenheit converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kelvin-to-fahrenheit