Thinset calculator

100 ft² with a 1/4 × 3/8 × 1/4 square notch

2bags

of 50 lb VersaBond-LHT

Your numbers

Area

Trowel notch 1/4 × 1/4 × 1/4 square 1/4 × 3/8 × 1/4 square 3/4 × 9/16 × 3/8 U @45° 3/4 × 9/16 × 3/8 U @30°

Thinset by trowel

VersaBond-LHT, 50 lb bags, for 100 ft².
Trowel notch	ft² per bag	Bags
1/4 × 1/4 × 1/4 square	90–100	1–2
1/4 × 3/8 × 1/4 square	60–67	2
3/4 × 9/16 × 3/8 U @45°	34–42	3
3/4 × 9/16 × 3/8 U @30°	38–47	3

Coverage is set by the trowel notch. Figures are for VersaBond-LHT; other mortars publish their own.

Sources

Figures built September 2026.

Where these numbers come from (1)

Thinset coverage: Custom Building Products, “VersaBond®-LHT Professional Large and Heavy Tile Mortar”, retrieved from https://www.custombuildingproducts.com/products/versabond-lft-professional-large-format-tile-mortar 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.