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
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.