Countertop Calculator
Estimate countertop square footage and cost
Sum of all counter run lengths
Standard: 25.5" (with overhang)
Affects price per sq ft
Total Area
—
sq ft
Slabs Needed
—
slabs
Material Cost
—
USD
With Installation
—
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 calculator estimates square footage and total cost based on counter dimensions and material choice.
- Measure total length of all counter runs
- Use standard 25.5" depth
- Select countertop material
- Enter specifications
- Factor in sink cutouts (deduct 3-5 sq ft each)
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
Area = Length x (Depth / 12)
Slabs = Area / 45 (standard slab ~45 sq ft)
Cost = Area x Price per sq ft
Frequently Asked Questions
How much do quartz countertops cost?
$50-$120 per sq ft installed. A typical 30 sq ft kitchen costs $1,500-$3,600 for quartz.
Is granite or quartz better?
Quartz is non-porous and more durable. Granite is natural stone with unique patterns but requires annual sealing.