Solar Roof Area Calculator
Calculate how many solar panels will fit on your roof with proper setbacks.
Roof Pitch Multiplier
Actual roof surface area is larger than footprint due to slope.
| Pitch | Angle | Multiplier |
|---|---|---|
| 4:12 | 18.4 | 1.054 |
| 6:12 | 26.6 | 1.118 |
| 8:12 | 33.7 | 1.202 |
| 12:12 | 45 | 1.414 |
Common Panel Sizes
| Wattage | Dimensions | Area |
|---|---|---|
| 350W | 60" x 36" | 15 sq ft |
| 400W | 65" x 39" | 17.5 sq ft |
| 450W | 70" x 40" | 19 sq ft |
| 500W | 75" x 41" | 21 sq ft |