Cement and aggregate quantity planning for a specified mix.
Required volume, mix ratio, bag size, waste and the selected product data.
Estimated cement, sand and aggregate quantities.
A ratio is not a structural mix design; confirm strength, local specification and product instructions.
See the estimated project quantity from your measurements.
Add waste and round to complete bags, boxes, cans, bundles or delivery quantities.
Review product coverage, site conditions, local requirements and supplier details before ordering.
Estimate cement volume and bag count from a project volume and a user-defined mix proportion.
The calculator converts finished wet volume into an estimated dry ingredient volume, then allocates that volume according to the cement:sand:aggregate proportion you enter.
Mix proportions depend on strength, aggregate grading, moisture, workability, exposure and project requirements. Use the specified mix or supplier design for structural concrete. This page is a quantity-planning aid, not a concrete mix-design standard.
Cement bag weight and yield differ by market and product. Enter the volume or yield stated on the product you actually plan to buy rather than assuming every bag has the same capacity.
It is a planning factor that accounts for the difference between finished concrete volume and the loose ingredient volumes used in a simple proportion estimate.
Use the calculator only for preliminary quantity checks. Structural concrete should follow the approved mix design and project specifications.