Convert Millimetres per metre per degree Fahrenheit to Millimetres per metre per kelvin
Convert Millimetres per metre per degree Fahrenheit (mm/(m·°F)) to Millimetres per metre per kelvin (mm/(m·K)) instantly and accurately.
Conversion Formula
mm/(m·K) = mm/(m·°F) × 1.8
About Millimetres per metre per degree Fahrenheit
The mm/(m·°F) equals 9/5 × 10⁻³ /K ≈1.8 × 10⁻³ /K, combining metric displacement with Fahrenheit temperature. It appears in US-origin pipeline and structural reports where dimensions are given in metres but temperatures in °F. Steel: ≈0.00667 mm/(m·°F); aluminium: ≈0.01283 mm/(m·°F). 1 mm/(m·°F) = 9/5 × 10⁻³ /K.
About Millimetres per metre per kelvin
The mm/(m·K) equals exactly 10⁻³ /K = 1000 ppm/K and is used in structural and civil engineering for bridge girder and pipeline thermal-expansion calculations. Steel at 0.012 mm/(m·K) expands 12 mm per 100 m track per 10 K rise. Polymers: 0.07-0.20 mm/(m·K). 1 mm/(m·K) = 10⁻³ /K = 1000 ppm/K.
Quick Reference Table
| Millimetres per metre per degree Fahrenheit (mm/(m·°F)) | Millimetres per metre per kelvin (mm/(m·K)) |
|---|---|
| 1 mm/(m·°F) | 1.8 mm/(m·K) |
| 2 mm/(m·°F) | 3.6 mm/(m·K) |
| 5 mm/(m·°F) | 9 mm/(m·K) |
| 10 mm/(m·°F) | 18 mm/(m·K) |
| 25 mm/(m·°F) | 45 mm/(m·K) |
| 50 mm/(m·°F) | 90 mm/(m·K) |
| 100 mm/(m·°F) | 180 mm/(m·K) |