Convert Kelvin per horsepower to Degree Fahrenheit per watt
Convert Kelvin per horsepower (K/hp) to Degree Fahrenheit per watt (°F/W) instantly and accurately.
Conversion Formula
°F/W = K/hp × 0.002413839761
About Kelvin per horsepower
The kelvin per horsepower (K/hp) equals 1/745.69987158 K/W ≈ 1.341 × 10⁻³ K/W. Used in mechanical engineering when rating engine cooling systems, gearbox oil coolers, and hydraulic heat exchangers alongside power expressed in horsepower. A transmission cooler at 0.05 K/hp raises fluid temperature 3.73 K per 75 hp of friction losses. 1 K/hp ≈ 1.341 × 10⁻³ K/W.
About Degree Fahrenheit per watt
The degree Fahrenheit per watt (°F/W) equals exactly 5/9 K/W ≈ 0.5556 K/W. It appears in US power electronics datasheets and legacy JEDEC thermal specifications where junction-to-case resistance is reported in °F/W rather than °C/W or K/W. A device rated 5 °F/W has R = 5 × 5/9 ≈ 2.78 K/W. 1 °F/W = 5/9 K/W.
Quick Reference Table
| Kelvin per horsepower (K/hp) | Degree Fahrenheit per watt (°F/W) |
|---|---|
| 1 K/hp | 0.00241384 °F/W |
| 2 K/hp | 0.00482768 °F/W |
| 5 K/hp | 0.0120692 °F/W |
| 10 K/hp | 0.0241384 °F/W |
| 25 K/hp | 0.060346 °F/W |
| 50 K/hp | 0.120692 °F/W |
| 100 K/hp | 0.241384 °F/W |