What every result keeps visible
- Formula ID, version, reviewed status and planning boundary.
- Inputs, assumptions, allowance and purchase-rounding effect.
- Editable estimate costs that remain distinct from material quantity.
2 reviewed exterior tools
Exterior calculators for transparent field planning.
Turn wall and gable measurements into siding squares and insulation packages after openings, coverage and cut allowance stay visible.
Formula-first tool library
Choose the right exterior calculator.
Siding calculator
Wall and gable siding area after openings, then squares and coverage units with a visible allowance.
Open calculatorInsulation calculator
Batt or roll count from net coverage area, product coverage and a visible cutting allowance.
Open calculatorCommon question
Is a siding square 100 square feet?
These are transparent planning aids, not engineering, code, installation or final supplier specifications. Confirm actual job requirements before construction.