ppm per °F to Per Kelvin Converter
Quick answer: To convert ppm per °F to Per Kelvin, multiply by 0.0000018. For example, 10 ppm/°F is 0.000018 1/K. One parts per million per °f equals 0.0000018 1/K.
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Use the ppm per °F to Per Kelvin Converter
ppm per °F to Per Kelvin formula and what each symbol means
1/K = ppm/°F × 0.0000018
| Symbol | Meaning |
|---|---|
| ppm/°F | Parts per million per °F |
| 1/K | Per kelvin |
ppm per °F to Per Kelvin examples
1 ppm/°F
1 ppm/°F × 0.0000018 = 0.0000018 1/K.
10 ppm/°F
10 ppm/°F × 0.0000018 = 0.000018 1/K.
100 ppm/°F
100 ppm/°F × 0.0000018 = 0.00018 1/K.
ppm per °F compared with Per Kelvin
One 1/K is 555,600 times as large as one ppm/°F, so your number gets smaller when you convert ppm per °F to Per Kelvin and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About ppm per °F and Per Kelvin
Parts per million per °F (ppm/°F): Parts per million per Fahrenheit degree; as a unit it equals 1.8×10⁻⁶ per kelvin. Per kelvin (1/K): Per kelvin, the SI unit of a thermal expansion coefficient.
How to calculate ppm per °F to Per Kelvin step by step
- Enter the value in ppm/°F (the starting unit).
- Multiply by 0.0000018, because 1 ppm/°F = 0.0000018 1/K.
- The product is the value in 1/K. To go back, divide by 0.0000018 or multiply by 555,555.6.
Popular thermal expansion conversions
How to read your ppm per °F to Per Kelvin result
The coefficient of linear thermal expansion is the fractional change in length per degree.
| PPM PER °F | PER KELVIN |
|---|---|
| 1 | 0.0000018 |
| 2 | 0.0000036 |
| 5 | 0.000009 |
| 10 | 0.000018 |
| 20 | 0.000036 |
| 50 | 0.00009 |
| 100 | 0.00018 |
| 1,000 | 0.0018 |
Per Kelvin to ppm per °F: quick table
| PER KELVIN | PPM PER °F |
|---|---|
| 1 | 555,555.6 |
| 5 | 2,777,778 |
| 10 | 5,555,556 |
| 25 | 13,888,890 |
| 50 | 27,777,780 |
| 100 | 55,555,560 |
| 250 | 138,888,900 |
| 500 | 277,777,800 |
Common mistakes when calculating ppm per °F to Per Kelvin
- Using a linear coefficient for volume expansion, which is roughly three times larger for solids.
- Dividing when you should multiply: from ppm/°F to 1/K multiply by 0.0000018; from 1/K to ppm/°F divide by 0.0000018.
ppm per °F to Per Kelvin FAQ
How many 1/K are in 1 ppm/°F?
1 ppm/°F equals 0.0000018 1/K.
How many ppm/°F are in 1 1/K?
1 1/K equals 555,555.6 ppm/°F.
Is 1 ppm/°F = 0.0000018 1/K an exact conversion?
The factor is shown rounded to 7 significant figures (0.0000018). The calculator above uses more digits.
What is a per kelvin (1/K)?
Per kelvin, the SI unit of a thermal expansion coefficient.
How can I estimate ppm per °F to Per Kelvin in my head?
One 1/K is 555,600 times as large as one ppm/°F, so your number gets smaller when you convert ppm per °F to Per Kelvin and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
What is 80 ppm/°F in Per Kelvin?
80 ppm/°F = 0.000144 1/K (since 80 × 0.0000018).
What is 500 ppm/°F in Per Kelvin?
500 ppm/°F = 0.0009 1/K (since 500 × 0.0000018).
What is 15 ppm/°F in Per Kelvin?
15 ppm/°F = 0.000027 1/K (since 15 × 0.0000018).
How many decimals should I keep when converting ppm/°F to 1/K?
Match the precision of your original measurement. For example, 0.000018 1/K rounds to 0.000018 1/K at 3 significant figures; keep more digits only for engineering or scientific work.
More in Thermal Expansion converters
- ppm per °C to Per Kelvin Converter
- Per Fahrenheit to ppm per °C Converter
- ppm per °C to Per Fahrenheit Converter
- Per Fahrenheit to ppm per °F Converter
- Per Kelvin to Per Fahrenheit Converter
- Per Kelvin to ppm per °C Converter
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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 International System of Units (SI)