Convert Per degree Fahrenheit to Percent per kelvin
Convert Per degree Fahrenheit (1/°F) to Percent per kelvin (%/K) instantly and accurately.
Conversion Formula
%/K = 1/°F × 180
About Per degree Fahrenheit
The per degree Fahrenheit (1/°F = °F⁻¹) equals exactly 9/5 /K = 1.8 /K and is the imperial counterpart of the SI unit. Found in ASME boiler and pressure vessel codes, ASHRAE engineering tables, and UL material data sheets. Iron: ≈6.7 × 10⁻⁶ /°F; ordinary glass: ≈4.9 × 10⁻⁶ /°F. 1 /°F = 9/5 /K (= 1/°R).
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
| Per degree Fahrenheit (1/°F) | Percent per kelvin (%/K) |
|---|---|
| 1 1/°F | 180 %/K |
| 2 1/°F | 360 %/K |
| 5 1/°F | 900 %/K |
| 10 1/°F | 1800 %/K |
| 25 1/°F | 4500 %/K |
| 50 1/°F | 9000 %/K |
| 100 1/°F | 18000 %/K |