Thermal Resistance
K/WtomK/W
Convert kelvins per watt (K/W) to millikelvins per watt (mK/W).
Factor1 K/W = 1000 mK/W
Converter
K/W
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mK/W
Rendered to 6 significant figures.
Formula
Formula
mK/W = K/W × 1000
Multiply any value in kelvins per watt by 1000 to obtain the value in millikelvins per watt.
Worked example
Convert 1 K/W to mK/W.
- 01Start with 1 K/W.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 mK/W.
Result1 K/W = 1000 mK/W
Conversion table
| K/W | mK/W |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from K/W to mK/W?
1 K/W equals 1000 mK/W. To convert, multiply the value in kelvins per watt by 1000.
How do I convert 1 K/W to mK/W?
1 K/W = 1000 mK/W. For any value, multiply by 1000.
How do I convert mK/W back to K/W?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 mK/W = 0.001 K/W.
When would I need to convert kelvin per watt to millikelvin per watt?
Thermal-resistance conversions between K/W and mK/W appear in electronics cooling (heat-sink and TIM datasheets), transformer, motor and generator thermal-rise calculations, lumped-element R-C thermal-network modelling, and transient heat-transfer analysis. K/W and °C/W are the SI standard; mK/W and µK/W cover sub-SI heat-sink and TIM datasheet ladders; K/kW and K/MW cover large-equipment and power-plant notation; °F·h/BTU and °F·s/BTU are the US convention. This category is lumped thermal resistance only — it does NOT include area-normalized R-value (m²·K/W), thermal-conductivity inverse with geometry, or U-value calculations, all of which are different physical quantities.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).