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Siding Calculator

Calculate siding materials for any house. Add multiple walls, subtract windows and doors, choose your siding type, and get full material quantities with cost estimates.

Project Settings

Choose unit system, siding type, and waste factor

Wall Sections

Add each wall — width × height. Gable ends add automatically.

Width (ft) Height (ft) Gable?

Openings to Subtract

Windows, doors, garage doors — subtract from total area

Label Width Height

Area Breakdown

Wall totals, deductions, and net siding area

Material Quantities

Siding, nails, house wrap, and trim estimates

Wall-by-Wall Detail

Wall W × H Gross Area Type

Project Summary

Enter walls and click
Calculate to see results

Siding Coverage Guide

Lap 4" exposure ~100 sq ft per square
Vinyl Panels ~2 sq ft per panel
Fiber Cement ~8.75 sq ft per plank
Wood Shingles ~50 sq ft per bundle
Metal Panels ~3 sq ft per panel

Pro Tips

Always add 10–15% waste for cuts, corners, and future repairs.
Gable triangles = 0.5 × base × height.
House wrap should extend 6" around all openings.