How it is calculated
The rate depends on the grade and the mix. Enter the figures from your own dosage. Water is not on this screen.
Cement = volume × kg per m³
Where the numbers come from
- Mortar volume — unit in the field: m³
- Cement per m³ — unit in the field: kg
- Bag — unit in the field: kg
- Sand per m³ — unit in the field: m³
Example
At these rates, 1 m³ is 350 kg of cement, 7 bags of 50 kg, and 1,1 m³ of sand.
Questions
A 25 kg bag?
Change the bag field.
Is this concrete?
No, crushed stone is not counted here. Concrete has its own calculator.
Where do 350 kg come from?
A common estimate for a mid-grade bricklaying mortar. On a bag of dry mix, read that bag’s own rate.