1. What is the Cement and Sand Calculator?

This calculator estimates the quantities of cement and sand needed for mortar in metric tons, based on the volume of mortar required and the cement-sand ratio.

2. How Does the Calculator Work?

The calculator uses these formulas:

Where:

• Volume — Total volume of mortar needed (cubic meters)
• Ratio — Cement to sand ratio (e.g., 1:4 ratio would be entered as 4)
• 1.33 — Dry mortar factor accounting for voids
• 1440 — Density of cement (kg/m³)
• 1600 — Density of sand (kg/m³)

3. Importance of Accurate Calculation

Details: Proper calculation ensures you purchase the correct quantities of materials, avoiding wastage or shortage on site. Accurate ratios are crucial for mortar strength and workability.

4. Using the Calculator

Tips: Enter the total volume of mortar needed in cubic meters and the desired cement-sand ratio. For a 1:4 mix, enter 4 as the ratio. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the 1.33 factor in the formula?
A: This accounts for the dry volume of mortar being about 33% more than the wet volume due to voids in the sand.

Q2: What are typical cement-sand ratios?
A: Common ratios are 1:3 to 1:6 for different applications (1:3 for structural work, 1:6 for plastering).

Q3: Why calculate in tons?
A: Cement and sand are typically purchased by weight (tons) rather than volume for accuracy.

Q4: Does this account for wastage?
A: No, you should add 5-10% extra to account for wastage during mixing and application.

Q5: Can I use this for concrete calculations?
A: No, this is specifically for mortar (cement-sand mix). Concrete requires additional calculations for aggregate.