Convert ppm per kelvin to Per millikelvin
Convert ppm per kelvin (ppm/K) to Per millikelvin (1/mK) instantly and accurately.
Conversion Formula
1/mK = ppm/K × 1.000000000e-9
About ppm per kelvin
The ppm/K (= μm/(m·K) exactly) equals 10⁻⁶ /K and is the universal CTE unit in international materials standards (ISO, EN, DIN). Aluminium: 23.1 ppm/K; steel: ≈12 ppm/K; ordinary glass: ≈9 ppm/K; fused silica: 0.55 ppm/K; Invar: ≈1.2 ppm/K. 1 ppm/K = 10⁻⁶ /K.
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.
Quick Reference Table
| ppm per kelvin (ppm/K) | Per millikelvin (1/mK) |
|---|---|
| 1 ppm/K | 1 × 10-9 1/mK |
| 2 ppm/K | 2 × 10-9 1/mK |
| 5 ppm/K | 5 × 10-9 1/mK |
| 10 ppm/K | 1 × 10-8 1/mK |
| 25 ppm/K | 2.5 × 10-8 1/mK |
| 50 ppm/K | 5 × 10-8 1/mK |
| 100 ppm/K | 1 × 10-7 1/mK |