Vinyl Siding Calculator

Estimate vinyl siding boxes for your walls.

Wall area

Coverage per box

Waste (%)

Boxes needed (boxes) 9

Formula: boxes = area × (1 + waste) ÷ coverage per box

Step-by-step with your numbers:

1. Values used:

2. Wall area = 1,500

3. Coverage per box = 200

4. Waste = 10 %

6. Boxes needed = 9boxes

Did we solve your problem today?

Vinyl siding is sold by the box (typically ~200 ft²). Estimate how many to buy.

The math behind it

boxes = wall area × (1 + waste) ÷ coverage per box, rounded up.

1,500 ft² + 10% at 200 ft²/box → 9 boxes.

Coverage varies?

Check the product — a 'square' of siding is 100 ft²; many boxes hold 2 squares.