Mortar Mix Calculator
Calculate cement, lime, sand, and water quantities for ASTM mortar types M, S, N, and O.
How to Use the Mortar Mix Calculator
- Select the mortar type (M, S, N, or O).
- Enter the required mortar volume in m³.
- Click Calculate to see cement, lime, sand, and water quantities.
Casi d'Uso
- •Estimating mortar ingredients for brickwork and blockwork.
- •Site batching of mortar to correct proportions.
- •Cost estimation for masonry projects.
- •Quality control on construction sites.
Formula
Mortar proportions per m³: Type M (1:0:3), Type S (1:0.5:4.5), Type N (1:1:6), Type O (1:2:9) — cement:lime:sand by volume.
Domande Frequenti
What is the difference between mortar types?
Type M is high-strength for below-grade masonry; Type S for moderate strength; Type N is general-purpose; Type O is low-strength for interior non-load-bearing walls.
How much water is needed?
Water is approximately 50% of cement weight; adjust for workability.
Is it free?
Yes, all calculators on OhMyCalc are completely free.