Brick Calculator

Estimate bricks and mortar for a wall.

Instant · runs in your browser
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About the Brick Calculator

Estimate how many bricks you need for a wall from its length, height and thickness (for example 4.5-inch or 9-inch walls), along with the cement and sand for the mortar. Door and window openings can be deducted.

Inputs

  • Wall size and thickness
  • Brick size and mortar joint thickness
  • Mortar ratio, e.g. 1:4 or 1:6

Tip

Add about 5% for broken bricks and cutting.

How to use Brick Calculator

  1. Enter your values. Units and defaults are shown beside each field.
  2. Press Calculate (results also update as you type once calculated).
  3. Read the result and the step-by-step breakdown with the formula used.
  4. Copy the result or reset to start again.

Frequently asked questions

How accurate is this calculator?

Calculations use the standard formulas shown on the page, computed in full precision and rounded only for display. The result is only as accurate as the inputs and assumptions listed.

Can I use this for engineering design?

No. These are rough quantity estimates using the assumptions shown (wastage, densities, mix ratios). Get structural and electrical work designed and approved by a qualified engineer.

Is it free?

Yes. All tools are free to use without an account.