ppm per °C to ppm per °F Converter
Quick answer: To convert ppm per °C to ppm per °F, multiply by 0.5555556. For example, 10 ppm/°C is 5.555556 ppm/°F. One parts per million per °c equals 0.5555556 ppm/°F.
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Use the ppm per °C to ppm per °F Converter
ppm per °C to ppm per °F formula and what each symbol means
ppm/°F = ppm/°C × 0.5555556
| Symbol | Meaning |
|---|---|
| ppm/°C | Parts per million per °C |
| ppm/°F | Parts per million per °F |
ppm per °C to ppm per °F examples
1 ppm/°C
1 ppm/°C × 0.5555556 = 0.5555556 ppm/°F.
10 ppm/°C
10 ppm/°C × 0.5555556 = 5.555556 ppm/°F.
100 ppm/°C
100 ppm/°C × 0.5555556 = 55.55556 ppm/°F.
ppm per °C compared with ppm per °F
One ppm/°F is 1.8 times as large as one ppm/°C, so your number gets smaller when you convert ppm per °C to ppm per °F and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About ppm per °C and ppm per °F
Parts per million per °C (ppm/°C): Parts per million per Celsius degree, 1×10⁻⁶ 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.
How to calculate ppm per °C to ppm per °F step by step
- Enter the value in ppm/°C (the starting unit).
- Multiply by 0.5555556, because 1 ppm/°C = 0.5555556 ppm/°F.
- The product is the value in ppm/°F. To go back, divide by 0.5555556 or multiply by 1.8.
Popular thermal expansion conversions
How to read your ppm per °C to ppm per °F result
Quick estimate: multiply by about 0.56 to get ppm per °F from ppm per °C; this is within 0.8% of the exact factor. Metals are typically in the range of roughly 10 to 25 ppm/°C, with steel near 12 and aluminium near 23.
| PPM PER °C | PPM PER °F |
|---|---|
| 1 | 0.5555556 |
| 2 | 1.111111 |
| 5 | 2.777778 |
| 10 | 5.555556 |
| 20 | 11.11111 |
| 50 | 27.77778 |
| 100 | 55.55556 |
| 1,000 | 555.5556 |
ppm per °F to ppm per °C: quick table
| PPM PER °F | PPM PER °C |
|---|---|
| 1 | 1.8 |
| 5 | 9 |
| 10 | 18 |
| 25 | 45 |
| 50 | 90 |
| 100 | 180 |
| 250 | 450 |
| 500 | 900 |
Common mistakes when calculating ppm per °C to ppm per °F
- Mixing per-°C and per-°F values for the same material: the per-°F number is 5/9 of the per-°C number.
- Dividing when you should multiply: from ppm/°C to ppm/°F multiply by 0.5555556; from ppm/°F to ppm/°C divide by 0.5555556.
ppm per °C to ppm per °F FAQ
How many ppm/°F are in 1 ppm/°C?
1 ppm/°C equals 0.5555556 ppm/°F.
How many ppm/°C are in 1 ppm/°F?
1 ppm/°F equals 1.8 ppm/°C.
Is 1 ppm/°C = 0.5555556 ppm/°F an exact conversion?
The factor is shown rounded to 7 significant figures (0.5555556). The calculator above uses more digits.
What is a parts per million per °F (ppm/°F)?
Parts per million per Fahrenheit degree; as a unit it equals 1.8×10⁻⁶ per kelvin.
How can I estimate ppm per °C to ppm per °F in my head?
Quick estimate: multiply by about 0.56 to get ppm per °F from ppm per °C; this is within 0.8% of the exact factor.
What is 15 ppm/°C in ppm per °F?
15 ppm/°C = 8.333333 ppm/°F (since 15 × 0.5555556).
What is 75 ppm/°C in ppm per °F?
75 ppm/°C = 41.66667 ppm/°F (since 75 × 0.5555556).
What is 300 ppm/°C in ppm per °F?
300 ppm/°C = 166.6667 ppm/°F (since 300 × 0.5555556).
How many decimals should I keep when converting ppm/°C to ppm/°F?
Match the precision of your original measurement. For example, 5.555556 ppm/°F rounds to 5.56 ppm/°F at 3 significant figures; keep more digits only for engineering or scientific work.
More in Thermal Expansion converters
- Per Kelvin to ppm per °F Converter
- Per Kelvin to ppm per °C Converter
- Per Fahrenheit to Per Kelvin Converter
- Per Kelvin to Per Fahrenheit Converter
- Per Fahrenheit to ppm per °C Converter
- Per Fahrenheit to ppm per °F 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)