Concrete, Brick & Masonry calculator
Mortar Calculator
Split a target mortar volume into component quantities using the specified mix ratio.
Split a target mortar volume into component quantities using the specified mix ratio. This estimate is most useful when the inputs reflect the job as it will actually be built, fitted or coated. Give particular attention to the stated mix basis. Use the same basis as the mix specification. A nominal ratio is not a substitute for an engineered mix design where strength or durability is critical.
What you need to enter
The Mortar Calculator uses the following project information to calculate the result.
- Total mixed volume
- Part A ratio
- Part B ratio
- Part C ratio
Calculator result
Quantity of each mix component
How the Mortar Calculator works
To produce quantity of each mix component, the Mortar Calculator applies splits total volume according to ratio parts. The engine is configured for mortar component quantities for brick, block or repair work, not as a generic text estimate. Check the stated mix basis, since an incorrect value there can materially change the result.
Mortar Calculator worked example
Mortar Calculator example: For a 1.00 m³ total mix using a 1:2:3 ratio, there are six total parts. The theoretical component volumes are therefore about 0.167 m³, 0.333 m³ and 0.500 m³ before any bulking, moisture or batching adjustments relevant to mortar component quantities for brick, block or repair work. The worked figure becomes more useful when the stated mix basis is taken from the real product or site rather than a generic default.
Important calculation assumptions
For mortar component quantities for brick, block or repair work, use the same basis as the mix specification. A nominal ratio is not a substitute for an engineered mix design where strength or durability is critical.
Frequently asked questions
How do I set up accurate inputs for the Mortar Calculator?
Enter the total mixed volume and each specified ratio part using the same basis—do not mix a by-volume ratio with by-mass quantities. On this page, the measurements are used specifically for mortar component quantities for brick, block or repair work.
Should I use a default value for the stated mix basis in the Mortar Calculator?
Mortar proportions must match the intended masonry work and the specification for the project. The Mortar Calculator can split a stated ratio, but it cannot decide the required mortar class, strength or durability for you.
How should I use the Mortar Calculator result in practice?
For the Mortar Calculator, treat the output as a decision aid rather than an isolated number. Use the component split only when the specified mix is genuinely expressed in that ratio and basis. Structural or performance mixes should follow the approved mix design rather than a generic ratio.