Construction

Thinset Calculator

Estimate bags of thinset mortar to set your tiles.

Tiled area

Coverage per bag

Waste (%)

Price per bag ($)

Calculated Output

Thinset bags (bags) 2

Total cost ($) 0

Formula: bags = area ÷ coverage × (1 + waste)

Step-by-Step Breakdown

1. Values used:

2. Tiled area = 120

3. Coverage per bag = 95

4. Waste = 10 %

5. Price per bag = 0 $

7. Thinset bags = 2bags

8. Total cost = 0$

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The math behind it

Bags = tiled area ÷ coverage per bag, rounded up, plus waste.

Larger notch trowels apply more mortar and cover less area per bag.

120 ft² with a 1/4 in trowel (~95 ft²/bag) + 10% waste → 2 bags.

Which trowel size?

Use a bigger notch for bigger/heavier tiles — it leaves a thicker bed and covers less area.