Cement, Sand & Mortar Calculator
Work out cement bags and sand for a mortar volume and mix ratio — with an editable dry-volume factor.
cft
Tip: get this from the brick calculator.
Mix ratio (cement : sand)
Assumptions — edit to match your site
Dry-volume factor converts wet mortar to the dry materials you must buy (≈1.33). Cement: 50 kg/bag, 1440 kg/m³.
Cement4.3 bags
Cement weight217 kg
Sand21.28 cft= 0.603 m³
Dry volume (materials)26.6 cft
How it's calculated
Dry volume = 20 × 1.33 = 26.6 cft
Total parts = 1 + 4 = 5
Cement = 26.6 × 1/5 = 5.32 cft → 217 kg ÷ 50 = 4.3 bags
Sand = 26.6 × 4/5 = 21.28 cft
⚠️ Indicative estimate only — quantities and prices vary by site, materials and method. Always verify with your contractor or vendor before buying.
Related tools
These tools are free
To turn an estimate into reality, hire verified professionals or order materials from suppliers on Mahprotocol.