OhMyCalc

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

  1. Select the mortar type (M, S, N, or O).
  2. Enter the required mortar volume in m³.
  3. Click Calculate to see cement, lime, sand, and water quantities.

使用例

計算式

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.

よくある質問

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.