Estimate tiles per row and joint count from row length, tile width and grout-joint width.
Calculator
Result Summary
Review the main answer, supporting values, chart breakdown, and calculation details.
Result Breakdown
Calculation Details
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How it works
Estimate tiles per row and joint count from row length, tile width and grout-joint width. Use the units shown in the calculator and review every assumption before using the result.
Formula
Tiles per row ≈ floor((row length + joint) ÷ (tile width + joint)).
Worked example
A 120 in row with 12 in tiles and 1/8 in joints fits about 9 full tiles before cuts.
Important assumptions
This tool is designed for planning and comparison. Real-world prices, manufacturer ratings, building requirements, lender terms, electrical codes, tolerances, and product specifications can vary.
Frequently asked questions
Is this calculator free?
Yes. It runs in your browser and does not require an account.
Are the results exact?
The math is deterministic for the entered values, but the result depends on inputs and assumptions. Verify safety-critical, financial, code-related, towing, fitment, and manufacturer-specific decisions with authoritative information.