Countertop Square Footage & Cost Calculator

Calculate countertop square footage, backsplash area, material allowance, slabs, and estimated project cost.

Countertop Dimensions

Counter Length (ft)

Counter Depth (in)

Number of Equal Sections

Island or Additional Section

Length (ft) — Optional

Width (ft) — Optional

Number of Equal Sections

Backsplash

Total Backsplash Length (ft)

Backsplash Height (in)

Material and Cost

Waste Allowance (%)

Coverage Per Slab (sq ft)

Price Is Entered Per

Material Price ($) — Optional

Additional Project Costs ($)

Countertop Estimate

Main Countertop Area —

Island or Additional Area —

Backsplash Area —

Total Project Area —

Material Needed With Allowance —

Slabs Required —

Material Purchased —

Estimated Material Cost —

Estimated Project Cost —

Slabs are rounded up to the next whole slab. Actual material requirements may vary because of seams, sink and cooktop cutouts, grain or pattern matching, edge profiles, fabrication, and installation requirements.

How the Estimate Works

Countertop depth is converted from inches to feet and multiplied by counter length. Island and backsplash areas are then added before applying the waste allowance.

Material needed = total project area × waste multiplier