Mortar Calculator

Estimate bags of mortar mix for laying bricks or blocks.

Mortar bags (bags) 37

Total cost ($) 0

Formula: bags = units ÷ units-per-bag × (1 + waste)

Step-by-step with your numbers:

1. Values used:

2. Number of bricks/blocks = 1,000

3. Units per bag = 30

4. Waste = 10 %

5. Price per bag = 0 $

7. Mortar bags = 37bags

8. Total cost = 0$

Did we solve your problem today?

Work out how many bags of mortar mix you need to lay a given number of bricks or blocks.

The math behind it

Bags = number of units ÷ units laid per bag, rounded up, plus waste.

Typical yields: ~30 bricks or ~12–13 blocks per 80 lb bag of mortar (varies by joint size).

1,000 bricks at 30 per bag + 10% waste → 1,000 ÷ 30 × 1.10 = 37 bags.

How many bricks per bag of mortar?

About 30 standard bricks per 80 lb bag with a 3/8 in joint.