Convert Per millikelvin to ppm per degree Fahrenheit
Convert Per millikelvin (1/mK) to ppm per degree Fahrenheit (ppm/°F) instantly and accurately.
Conversion Formula
ppm/°F = 1/mK × 555555555.6
About Per millikelvin
The per millikelvin (1/mK) equals exactly 10³ /K and is encountered in cryogenic physics where working temperatures lie in the millikelvin range. Near quantum phase transitions and magnetic ordering temperatures, anomalous CTE values can reach orders far above room-temperature CTE. 1 /mK = 10³ /K = 10⁹ ppm/K.
About ppm per degree Fahrenheit
The ppm/°F (= μin/(in·°F) exactly) equals 9/5 × 10⁻⁶ /K ≈1.8 × 10⁻⁶ /K and is the dominant CTE unit in US ASTM standards, ASME piping codes, and mechanical engineering handbooks. Steel ≈6.7 ppm/°F; aluminium ≈12.8 ppm/°F; copper ≈9.4 ppm/°F. 1 ppm/°F = 9/5 × 10⁻⁶ /K.
Quick Reference Table
| Per millikelvin (1/mK) | ppm per degree Fahrenheit (ppm/°F) |
|---|---|
| 1 1/mK | 555556000 ppm/°F |
| 2 1/mK | 1.111 × 109 ppm/°F |
| 5 1/mK | 2.778 × 109 ppm/°F |
| 10 1/mK | 5.556 × 109 ppm/°F |
| 25 1/mK | 1.389 × 1010 ppm/°F |
| 50 1/mK | 2.778 × 1010 ppm/°F |
| 100 1/mK | 5.556 × 1010 ppm/°F |