Heat flux
Heat-transfer rate per surface area.
Try a decimal, 1e-9, 1/3, or 5 1/2.
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Convert kilowatt per square metre (kW/m²) to Btu per hour square foot (BtuIT/(h·ft²)). Enter a value for an instant result, or use the examples and reverse conversion below.
Heat-transfer rate per surface area.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Enter a kilowatt per square metre value to calculate Btu per hour square foot with full internal precision before display rounding.
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
| Unit | Symbol | Converted value |
|---|---|---|
| watt per square metrefrom kW/m² | W/m² | 1000 |
| kilowatt per square metrefrom kW/m² | kW/m² | 1 |
| watt per square centimetrefrom kW/m² | W/cm² | 0.1 |
| Btu per hour square footfrom kW/m² | BtuIT/(h·ft²) | 316.998 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
Kilowatt Per Square Metre (kW/m²) and Btu per hour square foot (BtuIT/(h·ft²)) are units of heat flux. Use this page to convert in either direction.
| Kilowatt Per Square Metre (kW/m²) | Btu Per Hour Square Foot (BtuIT/(h·ft²)) |
|---|---|
| 1 kW/m² | 316.998 BtuIT/(h·ft²) |
| 5 kW/m² | 1584.99 BtuIT/(h·ft²) |
| 10 kW/m² | 3169.98 BtuIT/(h·ft²) |
| 100 kW/m² | 31699.8 BtuIT/(h·ft²) |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
BtuIT/(h·ft²) to kW/m² (Btu per hour square foot to kilowatt per square metre)