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Construction Calculators

Mortar Bags Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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Verified formula Private

Mortar bags needed

14

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Mortar Bags Calculator

The Mortar Bags Calculator works out your mortar bags needed in an instant. Enter number of bricks and bags per 1000 bricks and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the number of bricks.
  2. Enter the bags per 1000 bricks.
  3. Read off your mortar bags needed — the calculator updates automatically, with no button to press.

Worked example

For example, with number of bricks of 1,000 and bags per 1000 bricks of 14, the mortar bags needed is 14.

Inputs used
Number of bricks 1,000
Bags per 1000 bricks 14
Results
Mortar bags needed 14

Results are estimates for educational use, not professional advice.

Frequently asked questions

Roughly 12 to 16 bags per 1000 bricks, depending on joint size and brick type. The calculator uses your figure.

Multiply the number of bricks by bags per 1000, divided by 1000, then round up.

Joint thickness, brick size, wastage and mix ratio all change how much mortar a job needs.

Yes. A little extra covers spillage and thicker joints, avoiding a mid-job shortfall.

Enter the number of bricks. Enter the bags per 1000 bricks. Read off your mortar bags needed — the calculator updates automatically, with no button to press.

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