Convert Millikelvin per watt to Second-degree Fahrenheit per BTU
Convert Millikelvin per watt (mK/W) to Second-degree Fahrenheit per BTU (s·°F/BTU) instantly and accurately.
Conversion Formula
s·°F/BTU = mK/W × 1.899100535
About Millikelvin per watt
The millikelvin per watt (mK/W) equals exactly 10⁻³ K/W. It is used for ultra-low thermal resistances in high-conductivity materials such as diamond heat spreaders (≈ 0.3 mK/W per mm thickness for 1 cm² area), liquid metal TIMs, and cryogenic heat links. Measuring at this scale requires precision power dissipation and calorimetric temperature sensing. 1 mK/W = 10⁻³ K/W.
About Second-degree Fahrenheit per BTU
The second-degree Fahrenheit per BTU (s·°F/BTU) equals (5/9)/1055.05585262 K/W ≈ 5.265 × 10⁻⁴ K/W. Used in US aerospace and nuclear engineering where thermal transient analyses express power as BTU/s and temperature in °F, e.g. rocket engine heat rejection and reactor coolant loop calculations. 1 s·°F/BTU ≈ 5.265 × 10⁻⁴ K/W.
Quick Reference Table
| Millikelvin per watt (mK/W) | Second-degree Fahrenheit per BTU (s·°F/BTU) |
|---|---|
| 1 mK/W | 1.8991 s·°F/BTU |
| 2 mK/W | 3.7982 s·°F/BTU |
| 5 mK/W | 9.4955 s·°F/BTU |
| 10 mK/W | 18.991 s·°F/BTU |
| 25 mK/W | 47.4775 s·°F/BTU |
| 50 mK/W | 94.955 s·°F/BTU |
| 100 mK/W | 189.91 s·°F/BTU |