construction Verified Precision Tool
Plastering Material Calculator
Calculate cement bags and sand for wall plastering (12mm, 15mm, 20mm thickness).
Unit Standard:
Waste Factor:5%
Currency:
Project Inputs
Live Estimation Summary
Visual Schematic (rectangle)
Estimated Material & Direct Cost₹20,342.25
Material Quantities & BOQ Breakdown
| Item Material | Calculated Quantity | Standard Unit | Est. Unit Price | Subtotal (INR) |
|---|
Engineering Disclaimer: CalcyZone construction estimations are provided for planning, budgeting, and educational purposes. Material specifications, load calculations, and structural designs must be reviewed by a licensed civil or structural engineer prior to construction.
Mathematical Formula
Dry Mortar Volume = Wall Area × Plaster Thickness × 1.33 Dry Factor
Overview & Explanation
Computes cement bags and sand volume for internal ceiling/wall plastering (12mm) and external wall plastering (15mm/20mm).
How It Works
- Multiplies area by plaster thickness to obtain wet mortar volume.
- Applies dry factor 1.33 for dry mortar swelling.
- Calculates cement bags and sand cu ft using selected mortar ratio (e.g. 1:4).
Practical Applications
- Interior wall plastering
- Exterior weather plastering
- Ceiling rendering
Worked Example: 100 sq m Wall Plaster (12mm thick, 1:4 ratio)
Calculate cement & sand.
1
Wet Volume
100 × 0.012
= 1.2 m³
2
Dry Volume
1.2 × 1.33
= 1.596 m³
3
Cement Bags
(1 / 5) × 1.596 × 1440 / 50
= 9.2 Bags
Frequently Asked Questions
What ratio is recommended for internal plastering?
A mortar ratio of 1:4 (1 part cement to 4 parts sand) is standard for internal wall plastering.
Related Calculators
construction
Concrete Volume & Mix Calculator
Calculate concrete volume, dry materials, cement bags, sand, aggregate, and water for slabs, footings, and columns.
Use Calculator
construction
Brick & Masonry Wall Calculator
Calculate brick quantities, mortar volume, cement bags, and sand for single and double brick walls.
Use Calculator
construction
Wall Paint & Primer Calculator
Calculate paint liters, primer, and wall putty required for room interior and exterior painting.
Use Calculator