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Btu it per hour square foot to watt per square meter

Convert BTU IT per hour square foot (BTU IT/(h·ft²)) to watt per square meter (W/m²) with adjustable precision, a worked example and a reference table.

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Converters workspace● Runs in your browser
01 Your input
02 Your result
YOUR RESULT
Ready when you are
Conversion formula(value × 3.1545907450630484 + 0 − 0) ÷ 1

Reference table

BTU IT/(h·ft²)W/m²
13.15459074506
515.7729537253
1031.5459074506
2578.8647686266
50157.729537253
100315.459074506

How the conversion works

The input is converted into W/m² using the source factor and offset, then into watt per square meter. This keeps unit definitions consistent across the heat flux collection.

Definitions and sources

Factors are maintained in the versioned unit dataset. Output is rounded to your selected significant digits; calculation uses JavaScript double precision.

How to use this tool

  1. Enter a finite numeric value in BTU IT per hour square foot.
  2. Choose the significant digits for your result.
  3. Copy or download the result, including its formula.

Try this example

10

Accuracy and scope

Conversions use fixed unit definitions; results are rounded to floating-point precision.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.