Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Construction
Drywall Calculator
Determine how many drywall sheets you need to cover all walls and the ceiling of a room, with automatic deductions for doors and windows. Great for budgeting before any renovation or new build.
Fill in the required fields to see your result.
Construction
Roof Area Calculator
Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers.
Fill in the required fields to see your result.
Key differences
| Drywall Calculator | Roof Area Calculator | |
|---|---|---|
| Category | Construction | Construction |
| Inputs required | 6 | 3 |
| Result | Drywall Sheets Needed (sheets) | Roof Surface Area (m²) |
| What it does | Determine how many drywall sheets you need to cover all walls and the ceiling of a room, with automatic deductions for doors and windows. Great for budgeting before any renovation or new build. | Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers. |