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Tile & Grout Calculator

Estimate tile quantity and grout bags needed for a floor or wall, based on tile size and joint width.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.0

Market
Imperial · sales tax
13.12 ft9.84 ft
Schematic, drawn to the proportions you entered — not to scale on screen.
Who is doing the work?

The standard allowance most suppliers and estimating guides assume for ordinary work.

Estimated tile & grout needed

143 tiles

Check your inputs

Grout quantity varies significantly with joint width and depth — the grout bag figure is a rough planning number; check your specific grout product's coverage chart before purchasing.

Area to tile
129.17 sq ft
Estimated grout bags (rough)
2 bags

With the figures above, the result comes to 143 tiles. The method behind this is well established, though site conditions and material batches will move it somewhat. This is calculated for United States and cites IRC 2024. Building in another market? Change the selector above so the units and code reference follow.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Tile count = area / tile coverage, with a waste factor for cuts; grout coverage depends on tile size, joint width, and grout depth
  • A commonly-cited grout coverage rule of thumb: larger tiles and narrower joints need proportionally less grout per square foot

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why is the grout estimate less precise than the tile count?
Grout usage depends heavily on tile size, joint width, and grout depth — all of which vary by project. The tile count only depends on area and tile size, which is much more predictable.
Does this account for a specific pattern like herringbone?
Not directly — increase the waste factor to 20-25% for herringbone, diagonal, or other patterns with more angled cuts.
Sanded or unsanded grout — does it change the calculation?
The choice depends on joint width (sanded for joints over about 1/8 in), not on quantity per se — but always check your specific product's coverage chart, since formulations differ.