B
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Joule/square meter [J/m²] to Btu (IT)/square foot
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Reversed
1 Joule/square meter [J/m²] = 0.000088055 Btu (IT)/square foot -
Joule/square meter [J/m²] to Btu (th)/square foot
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Reversed
1 Joule/square meter [J/m²] = 0.000088114 Btu (th)/square foot