Heat Flux Density Converter
Enter a value below to convert between metric, imperial, and standard heat flux density units.
Convert Heat Flux Density
Enter a value and select the units to convert between watts per square meter, kilowatts per square meter, and watts per square centimeter.
You can change the units using the dropdowns above or click on a unit button.
Common Heat Flux Density Reference Points
Here are some common heat flux density values in Watt per Square Meter (W/m²), Kilowatt per Square Meter (kW/m²), and Watt per Square Centimeter (W/cm²). Click any preset value or arrow to load it into the converter.
| Description | Watt per Square Meter (W/m²) | Kilowatt per Square Meter (kW/m²) | Watt per Square Centimeter (W/cm²) |
|---|---|---|---|
| 1 watt per square meter unit | 1 | 0.001 | 0.0001 |
| 5 watts per square meter | 5 | 0.005 | 0.0005 |
| 10 watts per square meter benchmark | 10 | 0.01 | 0.001 |
| 25 watts per square meter | 25 | 0.025 | 0.0025 |
| 50 watts per square meter | 50 | 0.05 | 0.005 |
| 100 watts per square meter reference | 100 | 0.1 | 0.01 |
Heat Flux Density Conversion Formulas
Use the following formulas to convert between watts per square meter, kilowatts per square meter, and watts per square centimeter.
All heat flux density conversions are anchored to the international SI base unit (Watt per Square Meter) for full scientific and engineering accuracy.
More Watt per Square Meter & Kilowatt per Square Meter Conversions
Convert from Watts per Square Meter
Frequently Asked Questions
All Heat Flux Density Conversion Calculators (6)
Select any dedicated heat flux density pair below for worked examples and printable tables
Category Conversion Matrix
Simultaneous comparison of 5 units in this category
Heat Flux Density Unit Definitions & Symbols
Watt per Square Meter (W/m²)
SISI unit of heat flux density and solar irradiance.
Kilowatt per Square Meter (kW/m²)
METRICPeak solar irradiance benchmark (1 kW/m² = 1,000 W/m²).
Watt per Square Centimeter (W/cm²)
METRICEqual to 10,000 W/m².
Watt per Square Inch (W/in²)
US CUSTOMARYHeater element surface watt density unit (≈ 1,550 W/m²).
BTU per Hour-Square Foot (BTU/(h·ft²))
US CUSTOMARYUS HVAC heat flux unit (≈ 3.1546 W/m²).
References
- [1]NIST HB 133 StandardNIST (NIST HB 133 / SP 811)·Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition & NIST SP 811
- [2]BIPM SI BrochureBIPM (BIPM SI-9)·The International System of Units (SI Brochure, 9th Edition)
- [3]NIST SP 811 Appendix B.9NIST SP 811 (NIST SP 811 App. B.9)·NIST Guide to the SI, Appendix B.9: Factors for Units Listed by Kind of Quantity or Field of Science