THERMAL
Heat flux
Heat-transfer rate per surface area.
Try a decimal, 1e-9, 1/3, or 5 1/2.
ResultBtuIT/(h·ft²) → W/m²Convert Btu per hour square foot to watt per square metre
EVERYDAY · ENGINEERING · SCIENCE
Unit conversion. Made clear.
Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.
520units ready to convert
HOW IT IS CALCULATED
Convert through watt per square metre
Enter a Btu per hour square foot value to calculate watt per square metre with full internal precision before display rounding.
Display precisionAuto · 12 significant digits
Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| watt per square metrefrom BtuIT/(h·ft²) | W/m² | Interactive |
| kilowatt per square metrefrom BtuIT/(h·ft²) | kW/m² | Interactive |
| watt per square centimetrefrom BtuIT/(h·ft²) | W/cm² | Interactive |
| Btu per hour square footfrom BtuIT/(h·ft²) | BtuIT/(h·ft²) | Interactive |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.