Convert Watt to BTU using the exact conversion factor. This page provides the formula, reference values, and practical context for engineering, technical calculations, and professional measurement use.
Watt per square meter (W/m²) = BTU per hour per square foot (BTU/h·ft²) × 0.316998
To convert Watt per square meter (W/m²) to BTU per hour per square foot (BTU/h·ft²), multiply the value by 0.316998. The conversion factor is based on standardized unit definitions and is suitable for engineering analysis, system design, and professional measurement workflows.
Convert 1 W/m2 to BTU/h.ft2.
So, 1 W/m2 = 0.316998 BTU/h.ft2.
One Watt per square meter (W/m²) equals 0.316998 BTU per hour per square foot (BTU/h·ft²)
Units of heat flux density are standardized measurements used to quantify heat flow per unit surface area.
One BTU per hour per square foot (BTU/h·ft²) equals 0.316998 Watt per square meter (W/m²)
Units of heat flux density are standardized measurements used to quantify heat flow per unit surface area.
How many BTU per hour per square foot (BTU/h·ft²) are in 1 Watt per square meter (W/m²)?
1 Watt per square meter (W/m²) = 0.316998 BTU per hour per square foot (BTU/h·ft²).
How many BTU per hour per square foot (BTU/h·ft²) are in one Watt per square meter (W/m²)?
One Watt per square meter (W/m²) equals 0.316998 BTU per hour per square foot (BTU/h·ft²).
How many BTU/h.ft2 are in one W/m2?
One W/m2 equals 0.316998 BTU/h.ft2.
What is the formula for converting Watt per square meter (W/m²) to BTU per hour per square foot (BTU/h·ft²)?
Multiply the Watt per square meter (W/m²) value by 0.316998.
Can I reverse the conversion?
Yes. 1 BTU per hour per square foot (BTU/h·ft²) = 3.15459 Watts per square meter (W/m²).
Is this Watt per square meter (W/m²) to BTU per hour per square foot (BTU/h·ft²) conversion accurate for engineering use?
Yes. The conversion uses a standardized conversion factor suitable for engineering calculations, technical analysis, and professional reference.
Can this conversion be used for scientific or technical calculations?
Yes. This conversion is appropriate for scientific analysis, engineering calculations, simulations, and technical documentation where unit consistency is required.
By applying the conversion factor shown above, you can convert Watt per square meter (W/m²) to BTU per hour per square foot (BTU/h·ft²) for insulation analysis, thermal testing, and energy performance evaluation.
1 W/m2 = 0.001 kW/m2
1 Watt per square meter (W/m²) = 0.001 Kilowatt per square meter (kW/m²)
One Watt per square meter (W/m²) equals 0.001 Kilowatt per square meter (kW/m²)
1 W/m2 = 1,000 mW/m2
1 Watt per square meter (W/m²) = 1,000 Milliwatts per square meter (mW/m²)
One Watt per square meter (W/m²) equals 1,000 Milliwatts per square meter (mW/m²)
1 W/m2 = 1 J/s.m2
1 Watt per square meter (W/m²) = 1 Joule per second per square meter (J/s·m²)
One Watt per square meter (W/m²) equals 1 Joule per second per square meter (J/s·m²)
1 W/m2 = 0.317 BTU/h.ft2
1 Watt per square meter (W/m²) = 0.317 BTU per hour per square foot (BTU/h·ft²)
One Watt per square meter (W/m²) equals 0.317 BTU per hour per square foot (BTU/h·ft²)
1 W/m2 = 0.00009 BTU/s.ft2
1 Watt per square meter (W/m²) = 0.00009 BTU per second per square foot (BTU/s·ft²)
One Watt per square meter (W/m²) equals 0.00009 BTU per second per square foot (BTU/s·ft²)
1 W/m2 = 0.00528 BTU/min.ft2
1 Watt per square meter (W/m²) = 0.00528 BTU per minute per square foot (BTU/min·ft²)
One Watt per square meter (W/m²) equals 0.00528 BTU per minute per square foot (BTU/min·ft²)
1 W/m2 = 0.0001 W/cm2
1 Watt per square meter (W/m²) = 0.0001 Watt per square centimeter (W/cm²)
One Watt per square meter (W/m²) equals 0.0001 Watt per square centimeter (W/cm²)
1 W/m2 = 10⁻⁶ W/mm2
1 Watt per square meter (W/m²) = 10⁻⁶ Watt per square millimeter (W/mm²)
One Watt per square meter (W/m²) equals 10⁻⁶ Watt per square millimeter (W/mm²)
1 W/m2 = 0.00013 hp/ft2
1 Watt per square meter (W/m²) = 0.00013 Horsepower per square foot (hp/ft²)
One Watt per square meter (W/m²) equals 0.00013 Horsepower per square foot (hp/ft²)