How to measure hexagon tile
Hex tile is sold by a single size, like "2 inch hexagon," but brands don't agree on what that number means. Some measure flat-to-flat (between two opposite straight edges) and some measure point-to-point (between two opposite corners). The point-to-point measurement is about 15% larger.
This calculator uses the flat-to-flat width. Measure a tile with a tape or ruler across two parallel sides and enter that number, rather than relying on the size on the box.
How much grout hex tile needs
A regular hexagon needs about the same amount of grout as a square tile of the same width: a 2" hexagon uses roughly as much as a 2×2" square. What really drives grout quantity is tile size. Small hex mosaics have many more joints per square foot than large hexagons, so they need several times as much grout.
| Tile | Thickness | Joint | Sanded | Unsanded |
|---|---|---|---|---|
| 1" hexagon | 1/4" | 1/16" | 27.3 lbs | 22.4 lbs |
| 2" hexagon | 1/4" | 1/16" | 13.6 lbs | 11.2 lbs |
| 2" hexagon | 1/4" | 1/8" | 27.3 lbs | 22.4 lbs |
| 3" hexagon | 5/16" | 1/8" | 22.7 lbs | 18.6 lbs |
| 4" hexagon | 3/8" | 1/8" | 20.4 lbs | 16.8 lbs |
| 6" hexagon | 3/8" | 1/8" | 13.6 lbs | 11.2 lbs |
| 8" hexagon | 3/8" | 3/16" | 15.3 lbs | 12.6 lbs |
Two things move the number the most. Joint width is linear, so doubling the joint from 1/16" to 1/8" doubles the grout. Tile size works the other way: halving the hexagon size roughly doubles the grout.
Sanded or unsanded for hex tile?
Small hex mosaics are usually set with tight joints of 1/16" to 1/8", which typically call for unsanded grout. Larger hexagons with joints of 1/8" or wider generally use sanded grout. The calculator recommends one based on the joint width you pick. See sanded vs. unsanded grout for the details.
Tips for grouting hexagon mosaics
- Mesh-backed hex sheets have joints built in. Use the joint width between tiles on the sheet, and match it between sheets so the seams disappear.
- Work in small sections. Mosaics have a lot of joint surface, and grout can start setting before you finish cleaning a large area.
- Buy at least 10% extra. Mosaics lose more grout to the sponge during cleanup than large tile does.