it btu per hour square foot to watt per square inch
Convert it btu per hour square foot (BTU IT/(h·ft²)) to watt per square inch (W/in²). Use an editable heat flux converter, conversion formula, and reference table.
1 BTU IT/(h·ft²) = 0.002035215765 W/in²
Conversion formula
One it btu per hour square foot equals 0.002035215765 watt per square inch. Multiply your value in it btu per hour square foot by this factor to get watt per square inch. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 it btu per hour square foot:5 × 0.002035215765 = 0.01017607883 W/in²
Conversion table
| it btu per hour square foot (BTU IT/(h·ft²)) | watt per square inch (W/in²) |
|---|---|
| 0.01 | 0.00002035215765 |
| 0.1 | 0.0002035215765 |
| 1 | 0.002035215765 |
| 2 | 0.00407043153 |
| 5 | 0.01017607883 |
| 10 | 0.02035215765 |
| 25 | 0.05088039413 |
| 50 | 0.1017607883 |
| 100 | 0.2035215765 |
| 1000 | 2.035215765 |
About these measurements
Heat flux is thermal power per unit surface area.
The base reference used here is the watt per square meter. One it btu per hour square foot is 3.154590745 base units; one watt per square inch is 1,550.0031 base units.
Important distinctions
Compound units must match the quantity and dimension. Temperature intervals use size factors rather than temperature offsets. Calorie and BTU entries use the explicit definitions shown.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert BTU IT/(h·ft²) to W/in²?
Multiply the quantity in BTU IT/(h·ft²) by 0.002035215765. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the watt per square inch to it btu per hour square foot converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
