Calculate exterior siding panels, trim and cost for your home.
Formula: Net area = perimeter × height + gables − openings. Add 10% waste. Panels = ceil(area ÷ (exposure/12 × panel length)). Squares = area ÷ 100.
Related: Try our roofing calculator, insulation calculator, or paint calculator for your project.
| Material | $/sq ft (installed) | Lifespan | Maintenance |
|---|---|---|---|
| Vinyl | $3-7 | 20-30 yrs | Low (wash yearly) |
| Fiber cement | $5-10 | 30-50 yrs | Paint every 15 yrs |
| Wood (cedar) | $6-12 | 20-40 yrs | Paint/stain every 5-7 yrs |
| Metal (steel) | $5-9 | 30-50 yrs | Low |
Tip: Don't forget accessories: starter strip, J-channel, corner posts, trim, soffit, fascia, and house wrap. These add 15-25% to material cost.