Convert Second-degree Fahrenheit per BTU to Millikelvin per watt
Convert Second-degree Fahrenheit per BTU (s·°F/BTU) to Millikelvin per watt (mK/W) instantly and accurately.
Conversion Formula
mK/W = s·°F/BTU × 0.5265650668
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.
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.
Quick Reference Table
| Second-degree Fahrenheit per BTU (s·°F/BTU) | Millikelvin per watt (mK/W) |
|---|---|
| 1 s·°F/BTU | 0.526565 mK/W |
| 2 s·°F/BTU | 1.05313 mK/W |
| 5 s·°F/BTU | 2.63283 mK/W |
| 10 s·°F/BTU | 5.26565 mK/W |
| 25 s·°F/BTU | 13.1641 mK/W |
| 50 s·°F/BTU | 26.3283 mK/W |
| 100 s·°F/BTU | 52.6565 mK/W |