Siding Calculator
Estimate siding materials and cost for your home exterior
Perimeter of exterior walls
Average height of walls
Affects cost per square
10% standard, 15% for gables
Total Wall Area
—
sq ft
Siding Squares
—
squares
With Waste
—
sq ft
Estimated Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our siding calculator accounts for wall dimensions, openings, and waste to give you a precise material estimate.
- Measure perimeter of exterior walls
- Determine average wall height
- Select siding material
- Enter specifications
- Subtract window and door areas
AI Insights
Smart analysis for your project
Smart Estimates
Our AI cross-references material costs, regional pricing, and project complexity for more accurate estimates.
Waste Optimization
AI-calculated waste factors based on project type, not flat percentages. Saves 5-15% on material costs.
Best Practices
Recommendations derived from building codes, contractor data, and thousands of completed projects.
Calculation Formula
Wall area = Perimeter x Height
Squares = Wall area / 100
Total with waste = Wall area x (1 + Waste%)
Cost = Total x Price per sq ft
Frequently Asked Questions
How much does siding cost?
Vinyl: $5-$8/sq ft. Wood: $7-$14/sq ft. Fiber cement: $6-$12/sq ft. A 1,500 sq ft home costs $7,500-$18,000 for vinyl.
What is a square of siding?
A square equals 100 square feet of siding, the standard unit for ordering and pricing.