What waste % should I use?

10–15% is common for stone/quartz; increase for complex layouts or pattern matching.

Edge profiles or cutouts vary—how precise is this?

Treat edge/cutout as allowances; actual fabricator pricing may differ by profile and count.

Tile backsplash or slab?

Enter your per-foot cost for the backsplash type you’re using; slab backsplash costs more than tile.

Does this include plumbing or appliances?

No. Add plumbing fixture/appliance costs separately.

Set labor lower for DIY if applicable, but many slabs require pro fabrication/installation.

construction calculator

Countertop Cost Calculator

Estimate countertop cost with material, fabrication, labor per sq ft, edge upgrades, sink cutouts, backsplash, and waste allowance.

Results

Adjusted area (sq ft): 66.00
Material cost: $4,620
Fabrication cost: $1,650
Install labor: $1,320
Edge upgrade: $300
Sink/cutouts: $150
Backsplash: $500
Estimated total cost: $8,540
Cost per sq ft: $142

How to use this calculator

Enter countertop area and waste percentage.
Enter material, fabrication, and install labor per sq ft.
Add edge upgrades, sink cutouts, and backsplash run/ft costs.
Review total cost and cost per sq ft.

Inputs explained

Countertop area: Total countertop square footage.
Waste allowance: Stone/quartz offcuts (10–15% common).
Material cost/ft²: Slab cost per square foot.
Fabrication/ft²: Cutting, polishing, seams per square foot.
Labor/ft²: Install labor per square foot.
Edge upgrade: Allowance for premium edges.
Sink cutouts: Allowance for sink/faucet cutouts.
Backsplash length + cost: Linear feet of backsplash and cost per foot.

How it works

Adjusted area = countertop area × (1 + waste%). Material/fab/labor apply to adjusted area. Add edge upgrades, sink cutouts, and backsplash separately.

Total cost sums all components; cost per sq ft divides by original area.

Formula

Adjusted area = Area × (1 + Waste%)
Material = Adjusted area × Material $/ft²
Fabrication = Adjusted area × Fabrication $/ft²
Labor = Adjusted area × Labor $/ft²
Backsplash = Length × Cost/ft
Total = Material + Fabrication + Labor + Edge + Cutouts + Backsplash
Cost/ft² = Total ÷ Area

When to use it

Budgeting countertops in a kitchen or bath remodel.
Comparing materials (granite vs quartz vs solid surface) by changing per-ft costs.
Seeing how edge upgrades and cutouts impact total cost.

Tips & cautions

Increase waste for complex layouts or heavy pattern matching.
Edge and cutout costs vary by fabricator—treat these as allowances.
Backsplash could be slab or tile; adjust per-foot cost accordingly.
Does not include plumbing fixture costs or appliances.
Assumes flat rates per ft²/ft; complex shapes may vary.
Waste is a single percentage; fabricator layouts may differ.

Worked examples

60 sq ft, 10% waste, $70 material, $25 fabrication, $20 labor, $300 edge, $150 cutouts, 20 ft backsplash @ $25/ft

Adjusted area = 66 sq ft
Material ≈ $4,620
Fabrication ≈ $1,650
Labor ≈ $1,320
Edge + cutouts = $450
Backsplash = $500
Total ≈ $8,540; Cost/ft² ≈ $142.33

45 sq ft, 12% waste, $55 material, $20 fabrication, $18 labor, no edge upgrade, $200 cutouts, 15 ft backsplash @ $18/ft

Adjusted area ≈ 50.4 sq ft
Material ≈ $2,772
Fabrication ≈ $1,008
Labor ≈ $907
Edge = $0; Cutouts = $200
Backsplash = $270
Total ≈ $5,157; Cost/ft² ≈ $114.60

Deep dive

This countertop cost calculator applies waste to your area and adds material, fabrication, install labor, edge upgrades, sink cutouts, and backsplash to show total cost and cost per sq ft.

Use it to compare materials and options before getting fabricator quotes for kitchens or baths.

FAQs

What waste % should I use?: 10–15% is common for stone/quartz; increase for complex layouts or pattern matching.
Edge profiles or cutouts vary—how precise is this?: Treat edge/cutout as allowances; actual fabricator pricing may differ by profile and count.
Tile backsplash or slab?: Enter your per-foot cost for the backsplash type you’re using; slab backsplash costs more than tile.
Does this include plumbing or appliances?: No. Add plumbing fixture/appliance costs separately.
DIY vs pro install?: Set labor lower for DIY if applicable, but many slabs require pro fabrication/installation.

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Budgeting tool only. Countertop costs vary by material, fabricator, and layout. Confirm with quotes before purchasing.