Mix & Materials
Get the right mix every time
13 free calculators for cement, sand, gravel, bags, mortar, blocks, and mix design — covering M10 through M50 grades with full imperial and metric support.
Mix & Materials Calculators
All 13 calculators in this category — click any card to open the tool.
Cement, sand, and gravel quantities for any volume and mix ratio.
Use CalculatorHow many 40, 60, or 80 lb bags you need for any project volume.
Use CalculatorCement bags needed for slabs, footings, walls, and mortar mixes.
Use CalculatorACI mix design by target PSI strength, w/c ratio, and aggregate size.
Use CalculatorMaterial quantities for custom C:S:A ratios from M10 to M50.
Use CalculatorOptimal w/c ratio by target strength and exposure class.
Use CalculatorTotal weight of a concrete pour by volume and mix density.
Use CalculatorVolume and weight of sand or gravel for bases, fills, and mixes.
Use CalculatorBlock count and mortar for CMU walls by area and block size.
Use CalculatorGrout or concrete fill volume for hollow CMU block cores.
Use CalculatorCement and sand quantities for brick, block, and stone mortar joints.
Use CalculatorCubic yards and cost estimate for ordering ready-mix truck delivery.
Use CalculatorDensity and unit weight of concrete by mix proportions and aggregate type.
Use CalculatorPick the right calculator for your project
Match your mixing task to the best tool in this category.
| What are you doing? | Best tool to use | Open tool |
|---|---|---|
| Buying bagged concrete from a store | Bag calculator — outputs 40, 60, and 80 lb bag counts | Open |
| Mixing concrete on-site from raw materials | Mix calculator — cement, sand, and gravel by volume and ratio | Open |
| Designing a mix for a specific PSI or grade | Mix design calculator — ACI-based by target strength and w/c ratio | Open |
| Building a concrete block (CMU) wall | Block calculator for count and mortar, plus block fill for grouted cores | Open |
| Laying brick or stone with mortar | Mortar calculator — cement and sand by joint size and wall area | Open |
| Ordering a ready-mix truck delivery | Ready-mix calculator — cubic yards and cost estimate for supplier orders | Open |
Related calculator categories
Mix quantities are just one piece — these categories cover the full project.
Accurate mix quantities — every batch
Wrong proportions waste materials and weaken your pour. Our tools get it right the first time.
M10 to M50 grade support
Every mix calculator covers the full range of concrete grades — from plain lean mixes to high-strength structural grades used in commercial work.
Dry volume correction built in
All mix calculators account for the 54% dry volume factor — the most commonly skipped step that causes under-ordering of cement and aggregates.
Imperial and metric outputs
Switch between cubic yards / bags and cubic meters / kg at any point. Outputs match how suppliers quote and how project specs are written.
For a complete material plan, use the mix design calculator to confirm your proportions, cross-check water demand with the water-cement ratio calculator, then get your bag count from the concrete bag calculator.
Common questions about concrete mix and materials
Straight answers to the most-asked mix and materials questions.