Heat Flux Density Converter

Convert W/m², BTU/(h·ft²), kcal/(h·m²), and more — instantly.

Free heat flux density converter. Convert watts per square meter to BTU and calorie-based heat flux units with exact IT factors. Use the express converter for any unit pair, or open a quick conversion below.

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1 watt per square meter = 0.3169982863 BTU (IT) per hour square foot

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Watt per Square Meter → BTU (IT) per Hour Square Foot

Watt per Square Meter to BTU (IT) per Hour Square Foot

BTU (IT) per Hour Square Foot → Watt per Square Meter

BTU (IT) per Hour Square Foot to Watt per Square Meter

Watt per Square Meter → Kilocalorie (IT) per Hour Square Meter

Watt per Square Meter to Kilocalorie (IT) per Hour Square Meter

Kilocalorie (IT) per Hour Square Meter → Watt per Square Meter

Kilocalorie (IT) per Hour Square Meter to Watt per Square Meter

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Pick any unit to open a two-way conversion. IT and thermochemical calories/BTUs are labeled separately.

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WATT PER SQUARE METER

1 W/m² = 0.3169982863 BTU (IT)/(h·ft²)

watt per square meter (W/m²) → btu (it) per hour square foot (BTU (IT)/(h·ft²)) btu (it) per hour square foot (BTU (IT)/(h·ft²)) → watt per square meter (W/m²)

KILOWATT PER SQUARE METER

1 kW/m² = 1,000 W/m²

kilowatt per square meter (kW/m²) → watt per square meter (W/m²) watt per square meter (W/m²) → kilowatt per square meter (kW/m²)

JOULE PER SECOND SQUARE METER

1 J/(s·m²) = 1 W/m²

joule per second square meter (J/(s·m²)) → watt per square meter (W/m²) watt per square meter (W/m²) → joule per second square meter (J/(s·m²))

WATT PER SQUARE CENTIMETER

1 W/cm² = 10,000 W/m²

watt per square centimeter (W/cm²) → watt per square meter (W/m²) watt per square meter (W/m²) → watt per square centimeter (W/cm²)

WATT PER SQUARE INCH

1 W/in² = 1,550.0031012075 W/m²

watt per square inch (W/in²) → watt per square meter (W/m²) watt per square meter (W/m²) → watt per square inch (W/in²)

KILOCALORIE (IT) PER HOUR SQUARE METER

1 kcal (IT)/(h·m²) = 1.163 W/m²

kilocalorie (it) per hour square meter (kcal (IT)/(h·m²)) → watt per square meter (W/m²) watt per square meter (W/m²) → kilocalorie (it) per hour square meter (kcal (IT)/(h·m²))

CALORIE (IT) PER SECOND SQUARE CENTIMETER

1 cal (IT)/(s·cm²) = 41,868 W/m²

calorie (it) per second square centimeter (cal (IT)/(s·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (it) per second square centimeter (cal (IT)/(s·cm²))

CALORIE (IT) PER MINUTE SQUARE CENTIMETER

1 cal (IT)/(min·cm²) = 697.8 W/m²

calorie (it) per minute square centimeter (cal (IT)/(min·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (it) per minute square centimeter (cal (IT)/(min·cm²))

CALORIE (IT) PER HOUR SQUARE CENTIMETER

1 cal (IT)/(h·cm²) = 11.63 W/m²

calorie (it) per hour square centimeter (cal (IT)/(h·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (it) per hour square centimeter (cal (IT)/(h·cm²))

CALORIE (THERMOCHEMICAL) PER SECOND SQUARE CENTIMETER

1 cal (th)/(s·cm²) = 41,840 W/m²

calorie (thermochemical) per second square centimeter (cal (th)/(s·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (thermochemical) per second square centimeter (cal (th)/(s·cm²))

CALORIE (THERMOCHEMICAL) PER MINUTE SQUARE CENTIMETER

1 cal (th)/(min·cm²) = 697.3333333333 W/m²

calorie (thermochemical) per minute square centimeter (cal (th)/(min·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (thermochemical) per minute square centimeter (cal (th)/(min·cm²))

CALORIE (THERMOCHEMICAL) PER HOUR SQUARE CENTIMETER

1 cal (th)/(h·cm²) = 11.6222222222 W/m²

calorie (thermochemical) per hour square centimeter (cal (th)/(h·cm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → calorie (thermochemical) per hour square centimeter (cal (th)/(h·cm²))

BTU (IT) PER HOUR SQUARE FOOT

1 BTU (IT)/(h·ft²) = 3.154591186 W/m²

btu (it) per hour square foot (BTU (IT)/(h·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (it) per hour square foot (BTU (IT)/(h·ft²))

BTU (THERMOCHEMICAL) PER HOUR SQUARE FOOT

1 BTU (th)/(h·ft²) = 3.1524810541 W/m²

btu (thermochemical) per hour square foot (BTU (th)/(h·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (thermochemical) per hour square foot (BTU (th)/(h·ft²))

BTU (IT) PER MINUTE SQUARE FOOT

1 BTU (IT)/(min·ft²) = 189.2754465477 W/m²

btu (it) per minute square foot (BTU (IT)/(min·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (it) per minute square foot (BTU (IT)/(min·ft²))

BTU (THERMOCHEMICAL) PER MINUTE SQUARE FOOT

1 BTU (th)/(min·ft²) = 189.1488632466 W/m²

btu (thermochemical) per minute square foot (BTU (th)/(min·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (thermochemical) per minute square foot (BTU (th)/(min·ft²))

BTU (IT) PER SECOND SQUARE FOOT

1 BTU (IT)/(s·ft²) = 11,356.526682221 W/m²

btu (it) per second square foot (BTU (IT)/(s·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (it) per second square foot (BTU (IT)/(s·ft²))

BTU (THERMOCHEMICAL) PER SECOND SQUARE FOOT

1 BTU (th)/(s·ft²) = 11,348.93179479 W/m²

btu (thermochemical) per second square foot (BTU (th)/(s·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (thermochemical) per second square foot (BTU (th)/(s·ft²))

BTU (THERMOCHEMICAL) PER SECOND SQUARE INCH

1 BTU (th)/(s·in²) = 1,634,246.1784508 W/m²

btu (thermochemical) per second square inch (BTU (th)/(s·in²)) → watt per square meter (W/m²) watt per square meter (W/m²) → btu (thermochemical) per second square inch (BTU (th)/(s·in²))

KILOCALORIE (IT) PER HOUR SQUARE FOOT

1 kcal (IT)/(h·ft²) = 12.5184278205 W/m²

kilocalorie (it) per hour square foot (kcal (IT)/(h·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → kilocalorie (it) per hour square foot (kcal (IT)/(h·ft²))

CHU PER HOUR SQUARE FOOT

1 CHU/(h·ft²) = 5.6782633986 W/m²

chu per hour square foot (CHU/(h·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → chu per hour square foot (CHU/(h·ft²))

FOOT POUND PER MINUTE SQUARE FOOT

1 ft·lbf/(min·ft²) = 0.2432317156 W/m²

foot pound per minute square foot (ft·lbf/(min·ft²)) → watt per square meter (W/m²) watt per square meter (W/m²) → foot pound per minute square foot (ft·lbf/(min·ft²))

HORSEPOWER PER SQUARE FOOT

1 hp/ft² = 8,026.6466174305 W/m²

horsepower per square foot (hp/ft²) → watt per square meter (W/m²) watt per square meter (W/m²) → horsepower per square foot (hp/ft²)

HORSEPOWER (METRIC) PER SQUARE FOOT

1 hp (metric)/ft² = 7,916.8426564296 W/m²

horsepower (metric) per square foot (hp (metric)/ft²) → watt per square meter (W/m²) watt per square meter (W/m²) → horsepower (metric) per square foot (hp (metric)/ft²)

DYNE PER HOUR CENTIMETER

1 dyn/(h·cm) = 2.777778e-7 W/m²

dyne per hour centimeter (dyn/(h·cm)) → watt per square meter (W/m²) watt per square meter (W/m²) → dyne per hour centimeter (dyn/(h·cm))

ERG PER HOUR SQUARE MILLIMETER

1 erg/(h·mm²) = 0.0000277778 W/m²

erg per hour square millimeter (erg/(h·mm²)) → watt per square meter (W/m²) watt per square meter (W/m²) → erg per hour square millimeter (erg/(h·mm²))