Convert ppm per kelvin to Per degree Celsius
Convert ppm per kelvin (ppm/K) to Per degree Celsius (1/°C) instantly and accurately.
Conversion Formula
1/°C = ppm/K × 1.000000000e-6
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 degree Celsius
The per degree Celsius (1/°C = °C⁻¹) equals exactly 1/K since temperature intervals 1 °C = 1 K (exact). Common in European and ISO standards, chemistry textbooks, and physics literature as an alternative notation for the SI unit 1/K. A material with α = 12 × 10⁻⁶ /K is identically expressed as 12 × 10⁻⁶ /°C. 1 /°C = 1 /K = 10⁶ ppm/K.
Quick Reference Table
| ppm per kelvin (ppm/K) | Per degree Celsius (1/°C) |
|---|---|
| 1 ppm/K | 1 × 10-6 1/°C |
| 2 ppm/K | 2 × 10-6 1/°C |
| 5 ppm/K | 5 × 10-6 1/°C |
| 10 ppm/K | 1 × 10-5 1/°C |
| 25 ppm/K | 2.5 × 10-5 1/°C |
| 50 ppm/K | 5 × 10-5 1/°C |
| 100 ppm/K | 1 × 10-4 1/°C |