Grout Calculator — kg per m² and Total Bags

How to use

1. Set metric or imperial units, then enter tile width and length.
2. Enter the spacer width and tile thickness honestly — thickness matters more than people think.
3. Enter the total area to tile and keep a 10% waste margin.
4. Read kg/m², total kilograms and bag counts for 10 kg or 25 lb bags.

About this tool

Grout is the cheapest material on a tile job and the most annoying one to run out of mid-wall. This grout calculator uses the coverage formula tilers actually work with: grout per square meter equals (A + B) ÷ (A × B) × joint width × tile thickness × 1.6, where A and B are the tile's sides. Enter your tile size in centimeters or inches, the spacer width and tile thickness, and the total area to tile; you get kilograms per square meter, total kilograms and pounds including a waste margin, and bag counts for both 10-kilogram and 25-pound bags so it matches whatever your supplier stocks. Narrow joints and large-format tiles slash consumption, while mosaic sheets devour it — the per-square-meter figure makes those trade-offs visible before you buy. Epoxy grouts have different yields, so treat the result as cement-grout math. Everything runs locally in your browser with nothing uploaded.

FAQ

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