ppm per °F) to Per Kelvin Converter
Enter the thermal expansion in ppm per °f) below to convert it to per kelvin.
Convert ppm per °F (µin/(in·°F)) to Per Kelvin (1/K)
Enter a value in ppm per °f (µin/(in·°f)) (ppm/°F) to convert to per kelvin (1/k) (1/K).
Microinch per Inch-°F to Length/Length per Kelvin Conversion Table
Table showing various microinch per inch-°f measurements converted to per kelvin. Click any preset value or arrow to load it into the converter.
| ppm per °F (µin/(in·°F)) (ppm/°F) | Per Kelvin (1/K) (1/K) |
|---|---|
| 1 ppm/°F | 0.0000018 1/K |
| 10 ppm/°F | 0.000018 1/K |
| 100 ppm/°F | 0.00018 1/K |
| 1,000 ppm/°F | 0.0018 1/K |
| 10,000 ppm/°F | 0.018 1/K |
| 100,000 ppm/°F | 0.18 1/K |
| 1,000,000 ppm/°F | 1.8 1/K |
| 5,000,000 ppm/°F | 9 1/K |
| 10,000,000 ppm/°F | 18 1/K |
| 25,400,000 ppm/°F | 45.72 1/K |
How to Convert ppm per °F) to Per Kelvin
To convert ppm per °f) to per kelvin, multiply the thermal expansion by the following conversion ratio: 0.0000018 per kelvin/microinch per inch-°f.
Since one microinch per inch-°f is equal to 0.0000018 per kelvin, you can use this simple formula to convert:
The thermal expansion in per kelvin is equal to the thermal expansion in ppm per °f) multiplied by 0.0000018.
For example, here's how to convert 5 ppm per °f) to per kelvin using the formula above.
How Many Per Kelvin Are in a Microinch per Inch-°F?
There are 0.0000018 per kelvin in a microinch per inch-°f, which is why we use this value in the formula above.
Our microinch per inch-°f to length/length per kelvin calculator automatically converts your thermal expansion measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
ppm per °F) and per kelvin are both units used to measure thermal expansion. Keep reading to learn more about each unit.
What Is a Microinch per Inch-°F?
A microinch per inch-°f is a unit of thermal expansion equal to 0.0000018 per kelvin (1/K), the base unit for thermal expansion. US engineering expansion unit (1.8×10⁻⁶ /K). [1]
The microinch per inch-°f is classified as a US customary unit of thermal expansion. ppm per °F) can be abbreviated as ppm/°F; for example, 1 microinch per inch-°f can be written as 1 ppm/°F.
In the metric system, "micro" is the standard SI prefix for millionths, or 10⁻⁶. This makes the microinch per inch-°f (ppm/°F) a convenient decimal multiple of the length/length per kelvin (1/K).
In practice, ppm per °f) (ppm/°F) are widely used across fine-tolerance laboratory, analytical, and micro-scale thermal expansion measurements within US customary workflows, engineering documentation, and technical data sheets.
What Is a Length/Length per Kelvin?
SI fractional thermal expansion per kelvin. It serves as a primary reference unit for measuring thermal expansion across scientific and practical applications. [2]
The length/length per kelvin is classified as an International System of Units (SI) unit of thermal expansion. Per Kelvin can be abbreviated as 1/K; for example, 1 length/length per kelvin can be written as 1 1/K.
As the primary coherent reference unit for thermal expansion in this category, all other thermal expansion units are mathematically anchored to the length/length per kelvin (1/K).
In practice, per kelvin (1/K) are widely used across standard thermal expansion applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting thermal expansion between ppm per °f) (ppm/°F) and per kelvin (1/K), keep full floating-point precision (1 ppm/°F = 0.0000018 1/K; 1 1/K = 555,555.5555556 ppm/°F) during intermediate calculations and round only the final length/length per kelvin figure to match your instrument tolerance.
More Microinch per Inch-°F & Length/Length per Kelvin Conversions
Need to calculate in the opposite direction? Use our per kelvin (1/k) to ppm per °f (µin/(in·°f)) calculator to switch your starting unit immediately. You can also explore related tools such as converting per kelvin (1/k) to ppm per °f (µin/(in·°f)), converting per degree celsius (1/°c) to per kelvin (1/k), or converting per degree fahrenheit (1/°f) to per kelvin (1/k).
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Thermal Expansion Metrology Standard — ppm per °F (µin/(in·°F)) (ppm/°F) to Per Kelvin (1/K) (1/K)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Microinch per Inch-°F (ppm/°F) (ppm/°F) & Length/Length per Kelvin (1/K)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (ppm/°F to 1/K)