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Countertop Calculator

Calculate the square footage and estimated cost of a kitchen or bathroom countertop.

Result

Countertop Area
20.8 sq ft (1.94 m²)
Estimated Cost
$1,250
Material TierTypical $/sq ftEstimated Cost
Laminate$20-40$625
Granite/Quartz$50-100$1,563
High-end Stone$100-200$3,125

About the Countertop Calculator

Countertop pricing swings enormously by material, from budget laminate to high-end natural stone, so knowing the square footage first lets you compare tiers before committing to a specific slab or edge profile.

How It Works

The calculator multiplies the countertop's length by its depth (converted from inches to feet) to get square footage, then multiplies by your entered price per square foot for an installed cost estimate, and shows the same area priced across three common material tiers for comparison.

sq ft = length × (depth in inches ÷ 12); cost = sq ft × price per sq ft

Examples

A standard kitchen run

A 10 ft run at 25 inches deep is about 20.8 sq ft; at $60 per sq ft installed, that's roughly $1,250.

Comparing material tiers

The same 20.8 sq ft would run about $625 in laminate, $1,563 in granite or quartz, and $3,125 in high-end stone, based on typical tier pricing.

Advantages

  • Converts inches and feet automatically to avoid unit mistakes
  • Shows a three-tier cost comparison alongside the custom price estimate
  • Works for any countertop depth, not just a standard 25-inch run

Common Mistakes

  • Including the overhang or backsplash in the base countertop area
  • Treating an L-shaped counter as one simple rectangle instead of measuring each run
  • Not budgeting extra for seams on a long stone counter

Edge Cases to Watch For

  • This measures the countertop surface along its centerline - the standard 1.5" overhang on exposed edges and any backsplash are typically priced and measured as separate line items, not included in this base area.
  • L-shaped or U-shaped kitchen counters need each straight run measured and added together rather than treated as one simple length-times-depth rectangle.
  • Seams in a stone countertop (needed for runs longer than a slab can supply in one piece) can add fabrication cost not reflected in a straight per-square-foot rate.

Common Use Cases

  • Budgeting a kitchen or bathroom remodel before selecting a material
  • Comparing cost across laminate, stone, and high-end material tiers
  • Getting a rough figure to check a contractor's quote against
Written & fact-checked by the Calculateus TeamLast updated August 5, 2026How we verify our formulas

Frequently asked questions

Does this account for overhang and backsplash?

No - measure the countertop surface itself along its centerline; a standard 1.5" overhang on exposed edges and any backsplash are typically priced and measured separately from the main countertop area.

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Conclusion

Countertop area is simple once inches and feet are converted correctly, and the real value is in comparing material tiers before falling in love with a slab that's outside budget. Measure each run of an L- or U-shaped kitchen separately for an accurate total.