Mortar Volume Formula:
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Definition: This calculator estimates the quantity of sand and cement needed for mortar based on area, thickness, mix ratio, and bag yield.
Purpose: It helps construction professionals and DIYers determine how much material is required for masonry or plastering projects.
The calculator uses the formula:
Where:
Explanation: The area multiplied by thickness gives volume, adjusted by mix ratio, then divided by bag yield to get quantity.
Details: Proper calculation ensures correct material quantities, prevents wastage, and maintains structural integrity of masonry work.
Tips: Enter the area in square feet, thickness in inches, mix ratio (e.g., 0.25 for 1:4 ratio), and yield per bag (default 1.25 ft³/bag). All values must be > 0.
Q1: How do I convert mix ratio to decimal?
A: For a 1:4 mix (1 part cement to 4 parts sand), divide 1 by 4 to get 0.25.
Q2: What's a typical yield per bag?
A: Standard cement bags (94 lb) typically yield about 1.25 cubic feet of mortar.
Q3: How do I calculate sand quantity?
A: Multiply mortar volume by (1 - ratio). For 1:4 mix, sand = M × 0.75.
Q4: Why convert thickness to feet?
A: The calculator automatically converts inches to feet (÷12) for consistent units.
Q5: Does this include waste allowance?
A: No, consider adding 5-10% to the calculated volume for project contingencies.