Ppm per degree Fahrenheit to ppm per kelvin
Type a value in ppm/°F to get it in ppm/K instantly.
21.6ppm/K
That's 1.27× as much as copper, while aluminum is 1.06× more. A 10 m beam would move about 8.64 mm over a 40 °C swing.
Convert the other way: ppm/K to ppm/°F
What it means
How much does it move?
Linear expansion. Volume expansion is roughly three times the linear figure for solids.
The math
How to convert ppm/°F to ppm/K
To convert ppm per degree Fahrenheit to ppm per kelvin, multiply by 1.8.
Example: 12 ppm/°F × 1.8 = 21.6 ppm/K.
In the other direction, 1 ppm/K = 0.555556 ppm/°F.
Every unit
Your coefficient in every unit
Tables
ppm/°F to ppm/K conversion table
| ppm/°F | ppm/K |
|---|---|
| 0.5 ppm/°F | 0.9 ppm/K |
| 1 ppm/°F | 1.8 ppm/K |
| 5 ppm/°F | 9 ppm/K |
| 9 ppm/°F | 16.2 ppm/K |
| 12 ppm/°F | 21.6 ppm/K |
| 14 ppm/°F | 25.2 ppm/K |
| 17 ppm/°F | 30.6 ppm/K |
| 21 ppm/°F | 37.8 ppm/K |
| 23 ppm/°F | 41.4 ppm/K |
| 30 ppm/°F | 54 ppm/K |
| 70 ppm/°F | 126 ppm/K |
| 200 ppm/°F | 360 ppm/K |
ppm/K to ppm/°F conversion table
| ppm/K | ppm/°F |
|---|---|
| 0.5 ppm/K | 0.277778 ppm/°F |
| 1 ppm/K | 0.555556 ppm/°F |
| 5 ppm/K | 2.77778 ppm/°F |
| 9 ppm/K | 5 ppm/°F |
| 12 ppm/K | 6.66667 ppm/°F |
| 14 ppm/K | 7.77778 ppm/°F |
| 17 ppm/K | 9.44444 ppm/°F |
| 21 ppm/K | 11.6667 ppm/°F |
| 23 ppm/K | 12.7778 ppm/°F |
| 30 ppm/K | 16.6667 ppm/°F |
| 70 ppm/K | 38.8889 ppm/°F |
| 200 ppm/K | 111.111 ppm/°F |
Quick answers
Quick answers
- How many ppm/K is 1 ppm/°F?
- 1 ppm/°F is 1.8 ppm/K.
- How many ppm/K is 10 ppm/°F?
- 10 ppm/°F is 18 ppm/K.
- How many ppm/K is 12 ppm/°F?
- 12 ppm/°F is 21.6 ppm/K.
The units
About these units
Ppm per degree Fahrenheit (ppm/°F)
Parts per million per Fahrenheit degree, common in US datasheets.
Ppm per kelvin (ppm/K)
Parts per million per kelvin, the everyday engineering unit. Steel is 12.
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