Square Footage Calculator
Compute area for common shapes. Enter dimensions (each with its own unit), set quantity and optional price.
Rectangle
Inner size becomes negative with given border.
Inner radius must be ≥ 0.
Invalid triangle side lengths.
Results
| Area (per item) |
— |
| Total Area (× Quantity) |
— |
| Estimated Cost |
— |
Outputs are shown in square feet and square meters. Pricing uses your selected “per” unit and currency.