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Thermal Resistance

K/(BTU/h)to°C/W

Convert kelvins per BTU per hour (K/(BTU/h)) to degrees Celsius per watt (°C/W).

Factor1 K/(BTU/h) = 3.412142 °C/W

Converter

K/(BTU/h)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
3.41214°C/W

Rendered to 6 significant figures.

Formula

Formula
°C/W = K/(BTU/h) × 3.412142

Multiply any value in kelvins per BTU per hour by 3.412142 to obtain the value in degrees Celsius per watt.

Worked example

Convert 1 K/(BTU/h) to °C/W.

  1. 01Start with 1 K/(BTU/h).
  2. 02Multiply by the conversion factor: 1 × 3.412142 = 3.41214 °C/W.
Result1 K/(BTU/h) = 3.41214 °C/W

Conversion table

K/(BTU/h)°C/W
13.4121
26.8243
517.061
1034.121
2068.243
50170.61
100341.21
200682.43
5001706.1
10003412.1

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from K/(BTU/h) to °C/W?
1 K/(BTU/h) equals 3.412142 °C/W. To convert, multiply the value in kelvins per BTU per hour by 3.412142.
How do I convert 1 K/(BTU/h) to °C/W?
1 K/(BTU/h) = 3.41214 °C/W. For any value, multiply by 3.412142.
How do I convert °C/W back to K/(BTU/h)?
Divide by the same factor — or equivalently, multiply by 0.2930711. So 1 °C/W = 0.293071 K/(BTU/h).
When would I need to convert kelvin per BTU per hour to degree Celsius per watt?
Thermal-resistance conversions between K/(BTU/h) and °C/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).

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