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Heat Flux Density Converter

Convert heat flux (power per area) — W/m², BTU/(h·ft²), cal/(s·cm²) and more.

Result

3.154590745W/m²

1 BTU (IT) per hour square foot = 3.154590745 Watt per square meter

1 BTU/(h·ft²) in every unit
Watt per square meter3.154590745 W/m²
Kilowatt per square meter0.003154590745 kW/m²
Watt per square centimeter0.0003154590745 W/cm²
BTU (IT) per hour square foot1 BTU/(h·ft²)
BTU (IT) per second square foot0.0002777777778 BTU/(s·ft²)
Calorie (th) per second cm²0.00007539652832 cal/(s·cm²)
Calorie (th) per minute cm²0.004523791699 cal/(min·cm²)
Kilocalorie (IT) per hour m²2.712459798 kcal/(h·m²)
Erg per second cm²3,154.590745 erg/(s·cm²)

Show the work

  1. Find the conversion factor from BTU (IT) per hour square foot to Watt per square meter

    1 BTU/(h·ft²) = 3.154590745 W/m²

    factor = 3.154590745 ÷ 1 = 3.154590745 W/m² per BTU/(h·ft²)

  2. Multiply by the factor: BTU/(h·ft²) cancels, leaving W/m²

    W/m² = BTU/(h·ft²) × (W/m² per BTU/(h·ft²))

    1 BTU/(h·ft²) × 3.154590745 W/m² per BTU/(h·ft²) = 3.154590745 W/m²

How it works

1 BTU/(h·ft²) = 3.154590745 W/m², so W/m² = BTU/(h·ft²) × 3.154590745

BTU (IT) per hour square foot to Watt per square meter table

BTU (IT) per hour square footWatt per square meter
1 BTU/(h·ft²)3.154590745 W/m²
2 BTU/(h·ft²)6.30918149 W/m²
5 BTU/(h·ft²)15.77295373 W/m²
10 BTU/(h·ft²)31.54590745 W/m²
20 BTU/(h·ft²)63.0918149 W/m²
50 BTU/(h·ft²)157.7295373 W/m²
100 BTU/(h·ft²)315.4590745 W/m²
1,000 BTU/(h·ft²)3,154.590745 W/m²

Questions

How do I convert BTU (IT) per hour square foot to watt per square meter?
Multiply by 3.154590745. For example, 10 BTU/(h·ft²) = 31.54590745 W/m².
Which units does the heat flux density converter support?
Watt per square meter (W/m²), Kilowatt per square meter (kW/m²), Watt per square centimeter (W/cm²), BTU (IT) per hour square foot (BTU/(h·ft²)), BTU (IT) per second square foot (BTU/(s·ft²)), Calorie (th) per second cm² (cal/(s·cm²)), Calorie (th) per minute cm² (cal/(min·cm²)), Kilocalorie (IT) per hour m² (kcal/(h·m²)), Erg per second cm² (erg/(s·cm²)).

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