Standard Mortar Mix Ratios

Select from standardized cement-to-sand volumetric mix ratios designed for different load-bearing requirements and exposure conditions.

1:3

Rich Mortar Mix

1:4

External Masonry

1:6

Internal Brickwork

High strength mortar for damp-proof courses, structural repair, heavy plastering, and water-retaining masonry structures.

Standard ratio for external wall plastering, load-bearing brickwork, and outer structural masonry joints.

Recommended mix ratio for internal brick partition walls, general masonry work, and interior wall plaster.

Calculation Results Summary

Instant calculation outputs generated using dry volume conversion factor (1.33) and standard engineering material density formulas.

1.33x

Dry Volume Factor

50 kg

Cement Bag Unit

cu.ft / m³

Sand Volume

5% - 10%

Wastage Margin

Converts wet mortar volume into required dry material volume.

Calculates exact bags needed based on 1440 kg/m³ density.

Outputs aggregate sand quantity in cubic feet and metric tons.

Adjustable site allowance for joint spillages and structural wastage.

Civil engineering mortar calculation relies on converting calculated wet mortar volume to dry volume. Dry cement and sand shrink when mixed with water due to void filling.

1. Cement Quantity (m³) = (Ratio Parts of Cement / Total Ratio Parts) × Dry Mortar Volume

Dry Mortar Volume = Wet Mortar Volume × 1.33. For plastering work, an additional allowance of 20% to 30% is incorporated to cover mortar joints, frog filling, and uneven masonry surfaces.

2. Cement Bags = Cement Volume (m³) × 1440 kg/m³ ÷ 50 kg

3. Sand Volume (cu.ft) = Sand Volume (m³) × 35.315