Bathroom tile calculator
Bathroom, 40 ft² · 12 × 12 in tile, straight lay
Width 96 in · Length 60 in
Buy 44 tiles
with 10% extra · 40 cover it exactly
- Grout
- 1 × 25 lb bagUltracolor Plus FA
Your numbers
Optional, from the carton
The usual sizes here
| Size | Exact | Buy | Grout |
|---|---|---|---|
| 12 × 12 in | 40 | 44 | 2.0–2.9 lb |
| 12 × 24 in | 20 | 22 | 1.5–2.2 lb |
| 24 × 24 in | 10 | 11 | 1.0–1.5 lb |
| 2 × 2 in | 1,440 | 1,584 | 7.1–10.4 lb |
Grout for this area
| Product | Pounds | Buy |
|---|---|---|
| MAPEIUltracolor Plus FA chart | 2.6 lb | 125 lb bag |
| LATICRETESPECTRALOCK PRO Premium by volume | sold by volume | 1Full unit, 0.8 gal |
| Custom Building ProductsPolyblend Sanded chart | 2.9 lb | 125 lb bag |
| Custom Building ProductsPrism chart | 2.0 lb | 117 lb box |
| TECPower Grout chart (5/16 in row) | 2.3 lb | 125 lb bag |
Other surfaces
Sources
Figures built September 2026.
Where these numbers come from (7)
- Coverage: Custom Building Products, “Polyblend® Sanded Grout / TDS-129”, 3/22/2023, retrieved from https://www.custombuildingproducts.com/TDS/TDS-129.pdf on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Coverage: Custom Building Products, “Prism® Ultimate Performance Grout / TDS-128”, 6/20/2023, retrieved from https://www.custombuildingproducts.com/TDS/TDS-128.pdf on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Coverage: LATICRETE, “SPECTRALOCK® PRO Premium Grout†”, DS-681.0-0217, retrieved from https://cdn-global.laticrete.com/-/media/project/laticrete-international/north-america/product-documents/product-data-sheets/lds6810_spectralock-pro-premium-grout.ashx on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Grout waste: LATICRETE, “SpectraLOCK PRO Grout Installation & Maintenance Guide, TDS 400 PRO”, R 9 October 2009, retrieved from https://cdn-global.laticrete.com/-/media/project/laticrete-international/shared/files/support-and-downloads/technical-datasheets/tds400-pro.ashx?la=en on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Coverage: MAPEI, “Ultracolor Plus FA”, August 28, 2026, retrieved from https://cdnmedia.mapei.com/docs/librariesprovider67/products-documents/1_3000144_ultracolor-plus-fa_en-us_979a424a35724d82980fa0332f798319.pdf on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Coverage: H.B. Fuller Construction Products, “TEC® Power Grout® Product Data”, DS550 R0317-20, retrieved from https://pdf.lowes.com/installationguides/082093558101_install.pdf on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
- Overage: TileBuys, “How to calculate tile needed”, retrieved from https://www.tilebuys.com/pages/how-to-calculate-tile-needed on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
Quantities are estimates for buying materials. Actual use depends on tile variation, joint depth and installation; manufacturers publish their coverage figures for estimating only.