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Countertop material is typically priced and ordered by the square foot, with an added allowance for waste from cuts, seams, and sink/cooktop cutouts.
This calculator finds your countertop's total area (with waste allowance) and an estimated cost, from its length, depth, and price per square foot.
How it works
Enter your countertop's length and depth, an optional price per square foot, and a waste allowance percentage. The tool multiplies length by depth for the base area, adds the waste allowance, and multiplies by price for an estimated cost.
- Enter length (ft).
- Enter depth (ft).
- Enter price per sq ft ($, optional).
- Enter waste allowance (%).
- Click Calculate to see your results.
Examples
A 10 ft run at 2 ft depth
A 10 ft × 2 ft countertop with a 10% waste allowance needs 22 sq ft — at $60/sq ft, that's about $1,320.
Who should use it
- Budgeting for a kitchen or bathroom countertop replacement.
- Comparing estimated material costs between different countertop materials.
Industry applications
- Kitchen and bathroom remodeling
- General contracting
Advantages
- Combines area, waste allowance, and cost estimate into one calculation.
- Flexible for any countertop material once you know the price per square foot.
Limitations
- Doesn't include fabrication, edge treatment, or installation labor costs, which are typically quoted separately.
Common mistakes to avoid
- Forgetting to include a waste allowance for cuts, seams, and sink or cooktop cutouts.
- Assuming the material cost per square foot includes fabrication and installation, when these are often quoted separately.
Best practices
- Get a final quote from your countertop supplier once you have exact measurements — this calculator gives a useful early budgeting estimate, not a final fabrication quote.
Tips
- Get quotes from at least a couple of suppliers, since both material price per square foot and fabrication costs can vary significantly between them.