Shed Roof Area Calculator

Real roof area from the shed size and pitch.

A pitched roof has more surface than the floor under it. For rainwater catch, use the plan (floor plus overhang) area. Everything is worked out in your browser. Nothing is saved or sent anywhere.

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How it was worked out

    What this does and doesn't tell you

    • Use the plan area in the Roof Rainwater Catch Calculator.
    • This is a planning estimate only. Check the maker's instructions and your local council's rules before you build or buy.
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