Part per million per degree Fahrenheit to Part per million per kelvin Converter
1 part per million per degree Fahrenheit is exactly 1.8 parts per million per kelvin. Convert parts per million per degree Fahrenheit (ppm/°F) to parts per million per kelvin (ppm/K) below: type a value and the result updates as you type.
ppm/°F to ppm/K calculator
Result
Part per million per degree Fahrenheit to Part per million per kelvin conversion
1 ppm/°F = 1.8 ppm/Kone part per million per degree Fahrenheit in parts per million per kelvin
1 ppm/K ≈ 0.5555555556 ppm/°Fone part per million per kelvin in parts per million per degree Fahrenheit
Part per million per degree Fahrenheit (ppm/°F): One millionth per degree Fahrenheit, the same as one microinch per inch per degree Fahrenheit.
Part per million per kelvin (ppm/K): One millionth per kelvin, the same as one micrometer per meter per kelvin. Most metals expand by 10 to 25 ppm/K.
Source:Part per million per degree Fahrenheit: NIST Special Publication 811 (2008), Appendix B.8; Part per million per kelvin: SI Brochure, 9th edition (BIPM, 2019)
How to convert parts per million per degree Fahrenheit to parts per million per kelvin
To convert parts per million per degree Fahrenheit to parts per million per kelvin, multiply the number of parts per million per degree Fahrenheit by 1.8.
Formula
ppm/K = ppm/°F × 1.8
Examples
- 5 ppm/°F = 5 × 1.8 = 9 ppm/K
- 25 ppm/°F = 25 × 1.8 = 45 ppm/K
- 100 ppm/°F = 100 × 1.8 = 180 ppm/K
Part per million per degree Fahrenheit to Part per million per kelvin conversion table
| Part per million per degree Fahrenheit (ppm/°F) | Part per million per kelvin (ppm/K) |
|---|---|
| 0.1 ppm/°F | 0.18 ppm/K |
| 0.5 ppm/°F | 0.9 ppm/K |
| 1 ppm/°F | 1.8 ppm/K |
| 2 ppm/°F | 3.6 ppm/K |
| 3 ppm/°F | 5.4 ppm/K |
| 5 ppm/°F | 9 ppm/K |
| 10 ppm/°F | 18 ppm/K |
| 20 ppm/°F | 36 ppm/K |
| 25 ppm/°F | 45 ppm/K |
| 50 ppm/°F | 90 ppm/K |
| 100 ppm/°F | 180 ppm/K |
| 250 ppm/°F | 450 ppm/K |
| 500 ppm/°F | 900 ppm/K |
| 1000 ppm/°F | 1800 ppm/K |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many parts per million per kelvin are in one part per million per degree Fahrenheit?
- One part per million per degree Fahrenheit is exactly 1.8 parts per million per kelvin.
- How do I convert parts per million per kelvin to parts per million per degree Fahrenheit?
- To convert parts per million per kelvin to parts per million per degree Fahrenheit, divide the number of parts per million per kelvin by 1.8. The formula is ppm/°F = ppm/K ÷ 1.8.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1.8 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a part per million per degree Fahrenheit or a part per million per kelvin?
- A part per million per degree Fahrenheit is 1.8 times larger than a part per million per kelvin. In other words, a part per million per kelvin is about 0.5555555556 of a part per million per degree Fahrenheit.