Which brand of mortar should I choose for masonry?

For masonry walls (bricks, blocks), the optimal grade of mortar is M100. For plaster, M50-M75 is sufficient.

Why add a plasticizer to the solution?

The plasticizer increases the elasticity of the mixture, simplifies installation and prevents cracking when drying.

How does the brand of cement affect the proportions?

The higher the grade of cement (for example, PC500 versus PC400), the less of it is required to obtain a mortar of a given strength. The calculator takes these coefficients into account.

Mortar and cement calculator

Calculation of components for masonry and screed

By volume

By area

Volume of ready solution (m³)

Area (m²)

Layer (mm)

Solution brand

Cement grade

Enter volume or area
to calculate component consumption

Total weight of cement:

0kg

🏗️

0 pcs50 kg bags

🛍️

0 pcs25 kg bags

Sand 0 kg

Water (approximately) 0 l

Total volume of mixture 0 m³

💡 The calculation is theoretical. The actual consumption of water and sand greatly depends on their initial moisture content.

Calculation of cement mortar

🏗️ Calculation of cement mortar proportions in 1 minute

Forget about the “by eye” method. Our tool will help you accurately calculate the components (cement, sand, water) to obtain the desired grade of mortar - from M25 for plaster to M100 for masonry and screed.

💡 Why is the brand of cement important?
If you use cement PTs-500 instead of PTs-400, less of it will be needed to obtain the same strength. The calculator automatically takes these factors into account, helping you avoid overpaying for extra bags.

For what tasks is this calculation suitable?

🧱 Wall masonry: Calculate the solution for bricks or foam blocks. If you don’t yet know how much material you need for the walls, first use building block calculator.
🏠 Floor screed: Determine the volume of mixture to level the floor. To accurately calculate the square footage of a complex room, we recommend our area calculator.
🔨 Plaster: Selection of the correct consistency for interior or exterior wall decoration.

Frequently asked questions (FAQ)

🔹 Which brand of solution should I choose (M50, M100, M150)?

M50-M75: For plastering and grouting.
M100-M150: Classic option for laying bricks, blocks and rough screed.
M200 and higher:For critical structures, foundations and loaded floors.

🔹 Why do you need a plasticizer?

A plasticizer (or ordinary liquid soap in household conditions) makes the solution more elastic and easy to work with (“greasy”). It does not shrink as quickly and is easier to level. Standard dosage: 0.5–1% by weight of cement.

Больше по теме: Calculate Volume of Concrete

Armature🏗️ Online calculation of reinforcement for foundations and walls This tool solves the main problem of a private builder: to find out the exact weig...

🔹 PC400 or PC500 - which is better?

PTs500 sets faster and gives greater strength, but it is more expensive. For private construction (garden paths, garage), PC400 is usually sufficient. Our calculator allows you to recalculate the proportions for any brand.

🔹 How much water should I pour?

The classic water-cement ratio is about 0.5–0.7 parts water to 1 part cement. But the exact amount depends on the moisture content of the sand. Add water gradually until you get the consistency of “thick sour cream.”