Convert Millimetres per metre per degree Celsius to Percent per kelvin
Convert Millimetres per metre per degree Celsius (mm/(m·°C)) to Percent per kelvin (%/K) instantly and accurately.
Conversion Formula
%/K = mm/(m·°C) × 0.1
About Millimetres per metre per degree Celsius
The millimetre per metre per degree Celsius (mm/(m·°C)) equals exactly 10⁻³ /K = 1 mm/(m·K), since temperature intervals 1 °C = 1 K (exact). Used in European structural engineering, EN standards, and civil/mechanical design codes for expansion joint sizing. Steel rail: 0.012 mm/(m·°C); aluminium curtain wall: 0.023 mm/(m·°C). 1 mm/(m·°C) = 10⁻³ /K = 1 mm/(m·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
| Millimetres per metre per degree Celsius (mm/(m·°C)) | Percent per kelvin (%/K) |
|---|---|
| 1 mm/(m·°C) | 0.1 %/K |
| 2 mm/(m·°C) | 0.2 %/K |
| 5 mm/(m·°C) | 0.5 %/K |
| 10 mm/(m·°C) | 1 %/K |
| 25 mm/(m·°C) | 2.5 %/K |
| 50 mm/(m·°C) | 5 %/K |
| 100 mm/(m·°C) | 10 %/K |