Countertop material estimator

Countertop Calculator

Estimate countertop square footage, backsplash area, cutout deductions, waste, slab or sheet count, and rough material cost before requesting supplier pricing.

Units

Counter length (ft)Counter depth (ft)Backsplash length (ft)Backsplash height (ft)Cutout deductions (ft²)Waste / layout allowance (%)Slab or sheet coverage (ft²)Cost per area ($)Fixed cost per slab/sheet ($)

Countertop area

Slabs or sheets

Net area

Rough cost

Countertop fabrication is product-specific

Seams, sink cutouts, edge profiles, overhangs, slab layout, backsplash returns, support brackets, appliance clearances, and fabrication rules can change the final order. Use this for early square footage only.

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Countertop area formula

Deck area = counter length × counter depth

Backsplash area = backsplash length × backsplash height

Net area = deck area + backsplash area - cutouts

Order area = net area × (1 + waste %)

Sample takeoff

A 16 ft run at 2.08 ft deep, 16 ft of 0.33 ft backsplash, 6 ft² of cutouts, and 10% waste needs about 35.9 ft² of material.A 4.8 m run at 0.63 m deep, 4.8 m of 0.1 m backsplash, 0.55 m² of cutouts, and 10% waste needs about 3.2 m² of material.

Countertop Calculator FAQ

How does this countertop calculator work?+

It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. Use supplier slab sizes and fabrication rules before placing an order.It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. Use supplier slab sizes and fabrication rules before placing an order.

Should I use the default waste value?+

Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.

Is this a bid or code approval?+

No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.