Watt per Square Meter to BTU (IT) per Second per Square Foot Conversion

Convert between Watt per Square Meter and BTU (IT) per Second per Square Foot quickly and accurately.

W/m²
Btu/(s·ft²)

How to Convert Watt per Square Meter to BTU (IT) per Second per Square Foot

Conversion Formula

1 W/m² = 0 Btu/(s·ft²)
1 Btu/(s·ft²) = 11356.527 W/m²

Example

Convert 15 W/m² to Btu/(s·ft²):

15 W/m² = 15 × 0 Btu/(s·ft²) = 0.001 Btu/(s·ft²)

Unit Information

Learn about the heat flux density units you're converting between

Watt per Square Meter

W/m²

Definition

The watt per square meter (W/m²) is the SI unit of heat flux density, representing the rate of heat energy transfer per unit area. It quantifies the thermal energy flow across surfaces, making it essential for thermal analysis, heat transfer calculations, and energy density assessments in engineering applications.

History/Origin

Derived from the fundamental relationship between power and area in thermodynamic systems, this unit became standardized with the adoption of the International System of Units. It provides a consistent measure for heat flux density across different materials and thermal systems, enabling accurate thermal design and analysis.

Current Use

Widely used in thermal engineering, solar energy analysis, building thermal performance, and heat transfer calculations for quantifying energy flux distribution. It is essential for designing thermal management systems, analyzing solar radiation effects, and optimizing thermal insulation in various engineering applications.

Multiplier

1

Offset

0

BTU (IT) per Second per Square Foot

Btu/(s·ft²)

Definition

The BTU (IT) per second per square foot (Btu/(s·ft²)) is an imperial unit of heat flux density equal to approximately 11,357 watts per square meter. It represents the rate of heat energy transfer per unit area, commonly used in thermal engineering applications in the United States where imperial units are preferred.

History/Origin

Developed as part of the imperial system for heat flux density measurements, this unit became standard in the United States for thermal engineering and materials science applications. It provides a practical measure for heat flux density using familiar imperial units.

Current Use

Commonly used in thermal engineering, materials science, and HVAC applications in the United States where imperial units are preferred. It is essential for calculating heat transfer rates, designing thermal management systems, and analyzing thermal properties in imperial unit systems.

Multiplier

11356.527

Offset

0

Watt per Square Meter to BTU (IT) per Second per Square Foot Conversion Table

Watt per Square Meter [W/m²] BTU (IT) per Second per Square Foot [Btu/(s·ft²)]
1 W/m² 0.000088 Btu/(s·ft²)
10 W/m² 0.000881 Btu/(s·ft²)
25 W/m² 0.002201 Btu/(s·ft²)
50 W/m² 0.004403 Btu/(s·ft²)
100 W/m² 0.008806 Btu/(s·ft²)
0 W/m² 0E+0 Btu/(s·ft²)
-10 W/m² -0.000881 Btu/(s·ft²)
-40 W/m² -0.003522 Btu/(s·ft²)

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