Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Solar Energy
Solar Roof Area Calculator
Determine how many solar panels fit on your roof by entering its dimensions, pitch angle, and usable area percentage. Ideal for homeowners and installers planning a new solar installation.
Fill in the required fields to see your result.
Solar Energy
Solar Panel Area Calculator
Calculate the roof or ground area required for a target solar capacity given panel efficiency and local solar irradiance. Use it during early system planning to confirm available space supports the target system size.
Fill in the required fields to see your result.
Key differences
| Solar Roof Area Calculator | Solar Panel Area Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 3 |
| Result | Maximum Panels That Fit (panels) | Required Roof Area (m²) |
| What it does | Determine how many solar panels fit on your roof by entering its dimensions, pitch angle, and usable area percentage. Ideal for homeowners and installers planning a new solar installation. | Calculate the roof or ground area required for a target solar capacity given panel efficiency and local solar irradiance. Use it during early system planning to confirm available space supports the target system size. |