Tile Grout Calculator
Estimate grout amount and bags using tile size, joints, and area.
Quick guide
- Grout use depends on tile size, joint width, and joint depth.
- Smaller tiles and wider joints use more grout per square foot.
- Always round up to whole bags and keep a little extra for repairs.
Tile Grout Calculator
Estimate grout amount and bags using tile size, joints, and area.
Units
Results
- Grout (kg)
- 0.32
- Grout (lb)
- 0.7
- Grout volume (liters)
- 0.2
- Estimated bags
- 1
Note: this is an estimate. Product density and real-world coverage vary—check your grout bag label for yield guidance.
How to estimate grout
- Measure total tiled area and confirm tile length and width.
- Pick joint width and an average joint depth (often close to tile thickness).
- Convert the result to bags and add waste for spillage and cleanup.
Assumptions to double-check
- Grout density and bag yields vary by product; use label info for best accuracy.
- Irregular tile edges and textured tiles can increase grout usage.
- Large-format tile with narrow joints typically uses less grout per area.
Buying tips
- Choose sanded vs unsanded based on joint width and product recommendations.
- Mix small batches if you're new to grouting to reduce waste.
- If color matching matters, buy enough from the same lot when possible.
Last updated: Dec 2025
FAQ
What joint width should I use?
Follow tile and spacing recommendations. Wider joints use more grout.
Is sanded or unsanded grout better?
It depends on joint width and tile type. Use the product guidelines for your application.
Should I add waste?
Yes. Spillage, cleanup, and uneven joints can increase usage. 5-10% is a common buffer.
Related
In Floors & tile
Related guides
How to measure flooring
Room-by-room measuring and waste factors that matter.
How many boxes of flooring do I need?
Convert area to boxes and choose a waste factor.
How to estimate tile
Measure area, add waste, and convert to boxes.
Tile waste factor: how much extra to buy
When to use 10%, 15%, or more for overage.
Browse all guides →Disclaimer
Results are estimates for informational purposes only. Always verify measurements and product specifications.