Step-by-step instructions
- Enter or select Deck length (ft).
- Enter or select Deck width (ft).
- Enter or select Waste (%).
- Tap Calculate.
- Review the result shown directly below the calculator.
Decking Area Calculator
Estimate deck square footage including waste.
How to use the Decking Area Calculator
Estimate deck square footage including waste.
What the inputs mean
- Deck length (ft)
- Enter the measurement shown, using consistent units.
- Deck width (ft)
- Enter the measurement shown, using consistent units.
- Waste (%)
- Enter the percentage value requested by the calculator.
Formula or calculation method
Base area is calculated from the dimensions, then the selected waste allowance is added.
Example
Try entering realistic values for Deck length (ft) and Deck width (ft), then tap Calculate to see how the result changes.
How to understand the result
Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.