Kilowatts per Square Meter to BTUs per Hour-Square Foot Converter
Enter the heat flux density in kilowatts per square meter below to convert it to btus per hour-square foot.
Convert Kilowatts per Square Meter to BTUs per Hour-Square Foot
Enter a value in kilowatts per square meter (kW/m²) to convert to btus per hour-square foot (BTU/(h·ft²)).
Kilowatt per Square Meter to BTU per Hour-Square Foot Conversion Table
Table showing various kilowatt per square meter measurements converted to btus per hour-square foot. Click any preset value or arrow to load it into the converter.
| Kilowatts per Square Meter (kW/m²) | BTUs per Hour-Square Foot (BTU/(h·ft²)) |
|---|---|
| 1 kW/m² | 316.9983301 BTU/(h·ft²) |
| 2 kW/m² | 633.9966603 BTU/(h·ft²) |
| 2.5 kW/m² | 792.4958253 BTU/(h·ft²) |
| 5 kW/m² | 1,584.9916507 BTU/(h·ft²) |
| 10 kW/m² | 3,169.9833013 BTU/(h·ft²) |
| 15 kW/m² | 4,754.974952 BTU/(h·ft²) |
| 20 kW/m² | 6,339.9666026 BTU/(h·ft²) |
| 25 kW/m² | 7,924.9582533 BTU/(h·ft²) |
| 30 kW/m² | 9,509.949904 BTU/(h·ft²) |
| 50 kW/m² | 15,849.9165066 BTU/(h·ft²) |
How to Convert Kilowatts per Square Meter to BTUs per Hour-Square Foot
To convert kilowatts per square meter to btus per hour-square foot, multiply the heat flux density by the following conversion ratio: 316.9983301 btus per hour-square foot/kilowatt per square meter.
Since one kilowatt per square meter is equal to 316.9983301 btus per hour-square foot, you can use this simple formula to convert:
The heat flux density in btus per hour-square foot is equal to the heat flux density in kilowatts per square meter multiplied by 316.9983301.
For example, here's how to convert 5 kilowatts per square meter to btus per hour-square foot using the formula above.
How Many BTUs per Hour-Square Foot Are in a Kilowatt per Square Meter?
There are 316.9983301 btus per hour-square foot in a kilowatt per square meter, which is why we use this value in the formula above.
Our kilowatt per square meter to btu per hour-square foot calculator automatically converts your heat flux density measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Kilowatts per Square Meter and btus per hour-square foot are both units used to measure heat flux density. Keep reading to learn more about each unit.
What Is a Kilowatt per Square Meter?
A kilowatt per square meter is a unit of heat flux density equal to 1,000 watts per square meter (W/m²), the base unit for heat flux density. Peak solar irradiance benchmark (1 kW/m² = 1,000 W/m²). [1]
The kilowatt per square meter is classified as a metric and SI-compatible unit of heat flux density. Kilowatts per Square Meter can be abbreviated as kW/m²; for example, 1 kilowatt per square meter can be written as 1 kW/m².
In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilowatt per square meter (kW/m²) a convenient decimal multiple of the watt per square meter (W/m²).
In practice, kilowatts per square meter (kW/m²) are widely used across large-scale industrial, bulk, and macro-level heat flux density specifications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a BTU per Hour-Square Foot?
A btu per hour-square foot is a unit of heat flux density equal to 3.1545908 watts per square meter (W/m²), the base unit for heat flux density. US HVAC heat flux unit (≈ 3.1546 W/m²). [2]
The btu per hour-square foot is classified as a US customary unit of heat flux density. BTUs per Hour-Square Foot can be abbreviated as BTU/(h·ft²); for example, 1 btu per hour-square foot can be written as 1 BTU/(h·ft²).
When working with btus per hour-square foot (BTU/(h·ft²)) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, btus per hour-square foot (BTU/(h·ft²)) are widely used across standard heat flux density applications within US customary workflows, engineering documentation, and technical data sheets.
When converting heat flux density between kilowatts per square meter (kW/m²) and btus per hour-square foot (BTU/(h·ft²)), keep full floating-point precision (1 kW/m² = 316.9983301 BTU/(h·ft²); 1 BTU/(h·ft²) = 0.0031546 kW/m²) during intermediate calculations and round only the final btu per hour-square foot figure to match your instrument tolerance.
More Kilowatt per Square Meter & BTU per Hour-Square Foot Conversions
Need to calculate in the opposite direction? Use our btus per hour-square foot to kilowatts per square meter calculator to switch your starting unit immediately. You can also explore related tools such as converting btus per hour-square foot to kilowatts per square meter, converting kilowatts per square meter to watts per square meter, or converting watts per square meter to kilowatts per square meter.
Convert from Kilowatts per Square Meter
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Heat Flux Density Metrology Standard — Kilowatts per Square Meter (kW/m²) to BTUs per Hour-Square Foot (BTU/(h·ft²))
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Kilowatt per Square Meter (kW/m²) & BTU per Hour-Square Foot (BTU/(h·ft²))
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (kW/m² to BTU/(h·ft²))