Tile Grout Calculator

Calculate grout needed for your tile installation. Enter tile dimensions, joint width, and floor area to determine the number of grout bags required.

Enter Your Measurements

Tile Area(sq ft)

Tile Size(in)

Grout Joint Width(in)

Tile Thickness(in)

Results

25 lb Bags

bags

Grout Needed

6.5

lbs

Formula

Based on tile size, joint width, tile thickness, and area

How to Use This Calculator

How to Use

1
Enter total tile area in square feet.
2
Enter tile size (one side of square tile).
3
Enter grout joint width.
4
Enter tile thickness.

Frequently Asked Questions

What size grout joints should I use?

For 12x12 tiles, use 1/8 to 3/16 inch joints. For large format tiles (18x18+), use 1/16 to 1/8 inch. Smaller tiles like mosaics use 1/8 inch.

In-Depth Guides

📖

How to Tile a Bathroom: Materials, Cost & Calculator Guide

Calculate tile for bathroom floors and walls. Learn about grout, backer board, tile sizes, patterns, and installation costs for any bathroom.

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About This Calculator

This calculator uses the formula: Based on tile size, joint width, tile thickness, and area. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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