0 °F is equal to 255.3722 kelvin.
The conversion from Fahrenheit to kelvin involves first converting Fahrenheit to Celsius, then converting Celsius to kelvin by adding 273.15. Since 0 °F is below freezing point of water, the kelvin value is lower than room temperature but above absolute zero.
Conversion Tool
Result in kalvin:
Conversion Formula
To convert Fahrenheit (f) to kelvin (kalvin), first convert Fahrenheit to Celsius by subtracting 32, then multiplying by 5/9. After getting Celsius, add 273.15 to get kelvin. This formula works because kelvin is the absolute thermodynamic temperature scale, starting at absolute zero, and Celsius zero is 273.15 kelvin.
Formula:
K = (F − 32) × 5/9 + 273.15
Example: Convert 0 °F to kelvin step-by-step
- Subtract 32: 0 − 32 = -32
- Multiply by 5/9: -32 × 5/9 = -17.7778
- Add 273.15: -17.7778 + 273.15 = 255.3722 K
Conversion Example
- Convert 32 °F to kelvin:
- 32 – 32 = 0
- 0 × 5/9 = 0
- 0 + 273.15 = 273.15 K
- Convert 100 °F to kelvin:
- 100 – 32 = 68
- 68 × 5/9 ≈ 37.7778
- 37.7778 + 273.15 = 310.9278 K
- Convert -40 °F to kelvin:
- -40 – 32 = -72
- -72 × 5/9 = -40
- -40 + 273.15 = 233.15 K
- Convert 212 °F to kelvin:
- 212 – 32 = 180
- 180 × 5/9 = 100
- 100 + 273.15 = 373.15 K
Conversion Chart
| Fahrenheit (f) | Kelvin (kalvin) |
|---|---|
| -25.0 | 246.4833 |
| -20.0 | 249.8167 |
| -15.0 | 253.1500 |
| -10.0 | 256.4833 |
| -5.0 | 259.8167 |
| 0.0 | 263.1500 |
| 5.0 | 266.4833 |
| 10.0 | 269.8167 |
| 15.0 | 273.1500 |
| 20.0 | 276.4833 |
| 25.0 | 279.8167 |
The chart shows Fahrenheit values in increments of 5 between -25 and 25, with corresponding kelvin values calculated using the conversion formula. Use this chart to quickly estimate kelvin for common Fahrenheit values, reading horizontally. Values are rounded to four decimals.
Related Conversion Questions
- How many kelvin equal 0 degrees Fahrenheit?
- What is the kelvin temperature when Fahrenheit reads zero?
- Convert 0 °F to kelvin, what’s the exact value?
- Is 0 Fahrenheit above absolute zero in kelvin scale?
- How to convert zero Fahrenheit to kelvin manually?
- Why is the kelvin value for 0 °F less than room temperature?
- What is the formula to turn 0 Fahrenheit into kelvin?
Conversion Definitions
f (Fahrenheit): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric pressure. It was created by Daniel Gabriel Fahrenheit in 1724, and commonly used in the United States. The scale divides the range between freezing and boiling into 180 increments called degrees.
kalvin (Kelvin): Kelvin is the SI base unit of thermodynamic temperature, starting at absolute zero where particles have minimum thermal motion. One kelvin equals one degree Celsius in magnitude but begins at -273.15 °C. It is used in science and engineering to measure temperatures precisely without negative values.
Conversion FAQs
Can the Fahrenheit to kelvin conversion result in negative kelvin values?
No, kelvin is an absolute scale starting at zero; it cannot be negative. Since Fahrenheit temperatures below -459.67 °F correspond to temperatures below absolute zero, which are physically impossible, the conversion will never produce negative kelvin for valid Fahrenheit inputs.
Why does the conversion formula subtract 32 before multiplying by 5/9?
Fahrenheit scale sets water freezing point at 32 °F, not zero. Subtracting 32 converts Fahrenheit into a zero-based scale aligned with Celsius. Multiplying by 5/9 scales the degree size to match Celsius, since Fahrenheit degrees are smaller. This step normalizes Fahrenheit to Celsius before adding kelvin offset.
Is it necessary to use decimal precision in the conversion?
Using decimals improves accuracy, especially in scientific contexts. Since precise temperature measurements can affect results in experiments or calculations, rounding to four decimals or more keeps conversions reliable. For rough estimates, whole numbers could be used but lose detail.
Can this conversion formula be used for any temperature?
The formula applies correctly for any Fahrenheit input value. However, physically meaningful temperatures range above absolute zero (-459.67 °F). Inputting values below that results in kelvin values below zero, which are non-physical. For practical use, input values should be within valid temperature ranges.
Does the conversion change if using other temperature scales?
Yes, converting Fahrenheit to kelvin always involves going through Celsius. Direct conversions from other scales like Rankine or Réaumur use different formulas. This formula is specific to Fahrenheit and must not be used interchangeably with other scales without modification.