Convert ppm per kelvin to Percent per kelvin
Convert ppm per kelvin (ppm/K) to Percent per kelvin (%/K) instantly and accurately.
Conversion Formula
%/K = ppm/K × 1.000000000e-4
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 Percent per kelvin
The %/K equals exactly 10⁻² /K = 10 000 ppm/K and is used for high-CTE materials such as polymers, foams, and rubber. PTFE: ≈0.0135 %/K; HDPE: ≈0.015 %/K; natural rubber: ≈0.06 %/K; silicone rubber: ≈0.10 %/K. 1 %/K = 10⁻² /K = 10 mm/(m·K) = 10 000 ppm/K.
Quick Reference Table
| ppm per kelvin (ppm/K) | Percent per kelvin (%/K) |
|---|---|
| 1 ppm/K | 1 × 10-4 %/K |
| 2 ppm/K | 0.0002 %/K |
| 5 ppm/K | 0.0005 %/K |
| 10 ppm/K | 0.001 %/K |
| 25 ppm/K | 0.0025 %/K |
| 50 ppm/K | 0.005 %/K |
| 100 ppm/K | 0.01 %/K |