Cement Calculator for Concrete, Plaster & Brickwork

Use our Cement Calculator to exactly estimate the amount of cement required for different construction works, including concrete, plaster and brickwork. Simply select the type of work, provide the necessary inputs and get detailed results in cubic feet, cubic meters and number of cement bags required. This tool ensures accurate calculations to help you plan your construction project efficiently and minimize waste.

How the Cement Calculator Works

Our calculator use professionally designed formulas to accurately calculate the dry quantity of cement required for Concrete, Plaster and Brickwork. For example, a commonly used plaster mix ratio of 1:4 (1 part cement and 4 parts sand), calculator calculate the required quantities by using following formula:

Formula: Cement = (Plaster area in square feet × 0.05 × 1.6) / Sum of the ratio (e.g., 5)

Standard Mix Ratios

Concrete

Standard Mix Ratios for Concrete are M5 (1:5:10), M7.5 (1:4:8), M10 (1:3:6), M15 (1:2:4), M20 (1:1.5:3) and M25 (1:1:2)

Note: The first number is for Cement, the second for Sand, and the third for Aggregate.

Plaster

Standard Mix Ratios for Planster are 1:6, 1:5, 1:4 and 1:3

Note: The first number is for Cement, the second for Sand.

Brickwork

Standard Mix Ratios for Brickwork are 1:6, 1:5, 1:4 and 1:3

Note: The first number is for Cement, the second for Sand.

How to Calculate Cement Quantity

Cement Quantity for Concrete

Data Required:

Volume of concrete (in cubic meters or cubic feet)
Mix ratio (e.g., 1:2:4 for M15 concrete)

Procedure:

Formula: (Cement ratio / Sum of ratio) × Dry volume of concrete
Dry volume = Wet volume × 1.54
For M15 (1:2:4): Sum of ratio = 7, Cement ratio = 1

Cement Quantity for Plaster

Data Required:

Area of plaster (in square meters or square feet)
Mix ratio (e.g., 1:4 for cement to sand)

Procedure:

Formula: (Cement ratio / Sum of ratio) × Plaster dry volume
Plaster dry volume = Plaster area in sft × 0.05 × 1.6
For 1:4: Sum of ratio = 5, Cement ratio = 1

Cement Quantity for Brickwork

Data Required:

Volume of brickwork (cubic meters or cubic feet)
Mix ratio (e.g., 1:6 for cement to sand)

Procedure:

Formula: (Cement ratio / Sum of ratio) × Brickwork volume × 1.6 × 0.16
For 1:4: Sum of ratio = 5, Cement ratio = 1

Conversion Factors used in Cement Calculator

1 cubic meter (cum) = 35.32 cubic feet (cft)
1 square meter (sqm) = 10.76 square feet (sft)
1 Cement bag = 1.25 cft & 0.0354 cum

FAQs

What is the standard weight of one bag cement?

Standard weight of cement bag is 50 kg

How to we can calculate dry volume of concrete.

We can calculate dry volume of concrete by multiplying wet volume with 1.54

What is the standard thickness of Plaster?

To achieve max strength of plaster standard thickness should not be less than 1.5 cm (0.5 inch) and not more than 2cm (0.75 inch)