Heat Converters
Heat Transfer Coefficient Converter
Convert U-values and convective heat transfer coefficients between W/m²·K and BTU/h·ft²·°F. Natural convection in air is roughly 5–25 W/m²·K.
HEAT TRANSFER COEFFICIENT CONVERTER — INSTANT RESULT
All supported units — heat transfer coefficient
| Unit | Symbol | To watt/square meter·kelvin (W/m²·K) | From watt/square meter·kelvin (W/m²·K) |
|---|---|---|---|
| Watt/square meter·kelvin | W/m²·K | 1 W/m²·K = 1 W/m²·K | 1 W/m²·K = 1 W/m²·K |
| Kilowatt/square meter·kelvin | kW/m²·K | 1 kW/m²·K = 1,000 W/m²·K | 1 W/m²·K = 0.001 kW/m²·K |
| BTU/hour·square foot·°F | BTU/h·ft²·°F | 1 BTU/h·ft²·°F = 5.67826334 W/m²·K | 1 W/m²·K = 0.17611018 BTU/h·ft²·°F |
| BTU/second·square foot·°F | BTU/s·ft²·°F | 1 BTU/s·ft²·°F = 20,441.748 W/m²·K | 1 W/m²·K = 4.8919496e-05 BTU/s·ft²·°F |
| Kilocalorie/hour·square meter·°C | kcal/h·m²·°C | 1 kcal/h·m²·°C = 1.163 W/m²·K | 1 W/m²·K = 0.85984523 kcal/h·m²·°C |
| Calorie/second·square centimeter·°C | cal/s·cm²·°C | 1 cal/s·cm²·°C = 41,840 W/m²·K | 1 W/m²·K = 2.3900574e-05 cal/s·cm²·°C |
Popular heat transfer coefficient conversions
Frequently asked questions
What units does this heat transfer coefficient converter support?
It supports 6 units: Watt/square meter·kelvin (W/m²·K), Kilowatt/square meter·kelvin (kW/m²·K), BTU/hour·square foot·°F (BTU/h·ft²·°F), BTU/second·square foot·°F (BTU/s·ft²·°F), Kilocalorie/hour·square meter·°C (kcal/h·m²·°C), Calorie/second·square centimeter·°C (cal/s·cm²·°C).
What is the base unit of heat transfer coefficient?
The SI reference unit is the watt/square meter·kelvin (W/m²·K). Every conversion is computed by converting the input to the base unit, then from the base unit to the target unit, so chained precision is preserved.
Is this converter accurate?
Yes. Conversion factors use exact legal definitions where they exist (for example 1 in = 25.4 mm exactly) and CODATA/ISO constants otherwise. Results are shown to up to 10 significant figures.