Calculated result
6bags
Cement bags to batch
Formula
CONC-MIX-001dry volume = wet volume × dry factor; each material = dry volume × parts ÷ total parts
5.94 ft³
Cement volume
0.44 yd³
Sand volume
0.88 yd³
Aggregate volume
Concrete calculator
Concrete mix calculator
Volumetric cement, sand and aggregate split from a known wet volume using a stated mix ratio and dry-volume factor.
By Feroz Sheikh · Formula CONC-MIX-001 v1.0.1 · Tested formula
Formula
CONC-MIX-001v1.0.1Project inputs
Enter your measurements. Switching units converts the same project, including coverage and unit rates. Package yields keep the unit printed beside each field.
Refine measurements and rates at any time. Your current values are included in the material-list PDF.
Planning estimate, not engineering advice. Confirm site measurements and product specifications. Calculation limits.
This calculator splits a known wet concrete volume into cement bags, sand and coarse aggregate using a stated volumetric ratio and a documented dry-volume factor — not a strength mix design.
- Start from a calculated wet volume, not a guessed pad size.
- Enter the volumetric parts you intend to batch, such as 1:2:4.
- Keep the dry-volume factor visible; it is a planning convention, not a laboratory yield.
Add your project costs
Enter supplier prices and any labour, equipment or delivery costs. Pick a currency — badges, inputs, and totals follow.
Enter your supplier’s ready-mix concrete rate in the selected unit. Add delivery, pumping, short-load fees and placing labour as separate project costs. For GCC projects, select QAR, AED, SAR, KWD, OMR or BHD and enter local supplier rates.
How this calculator works
A transparent concrete mix calculator takeoff.
Feroz SheikhWritten by Feroz Sheikh · founder
This calculator splits a known wet concrete volume into cement bags, sand and coarse aggregate using a stated volumetric ratio and a documented dry-volume factor — not a strength mix design.
CONC-MIX-001 splits a known wet volume into cement, sand and aggregate using a stated mix ratio. It is a volumetric batch, not a mix design and not a strength stamp. Formula ID stays so the ratio is not a hidden 1:2:3.
Worked example. Example: 1 yd³ of wet concrete at a 1:2:4 ratio with a 1.54 dry-volume factor needs 5.94 ft³ of cement, which rounds to 6 bags at 1.0 ft³ each, plus 0.44 yd³ of sand and 0.88 yd³ of aggregate.
See the example inputs and calculated result
This separate example uses the calculator's starting values in imperial units. It stays unchanged when you edit the tool above. Example rates, yields and dimensions are assumptions, not recommendations for your project.
| Input | Example value |
|---|---|
| Wet concrete volume | 1 yd³ |
| Cement parts | 1 ratio |
| Sand parts | 2 ratio |
| Aggregate parts | 4 ratio |
| Dry-volume factor | 1.54 ratio |
| Cement bag yield | 1 ft³ / bag |
| Waste factor | 0 % |
Example result: Cement bags to batch — 6 bags.
dry volume = wet volume × dry factor; each material = dry volume × parts ÷ total parts
Use the labelled units above when reproducing this example. To work in metric, switch the calculator to Metric; applicable measurements are converted, while product-specific units remain labelled.
- 1. Start from a calculated wet volume, not a guessed pad size.
- 2. Enter the volumetric parts you intend to batch, such as 1:2:4.
- 3. Keep the dry-volume factor visible; it is a planning convention, not a laboratory yield.
Field notes that change the number
- Start from the waste-adjusted wet volume, not the net prism.
- Ratios are by volume unless you say otherwise. Do not mix a weight ratio into this split.
- Water, admixtures and fibre are extras.
Common mistakes
- Calling this a 4,000 psi design.
- Using a dry-volume ratio on a wet order without the stated extra.
- Treating bag cement as a truck ticket.
Need the broader workflow? Read the concrete planning guide.
Questions
Questions about concrete mix calculator
Does this produce a PSI or mix design?
No. Volumetric parts do not replace an ACI or supplier mix design, water-cement ratio or trial batch.
Why is 1.54 shown?
Many field manuals multiply wet volume by about 1.54 to estimate dry material volume. Replace it when you have a measured yield.
What is the formula ID?
This concrete mix calculator publishes formula CONC-MIX-001, version 1.0.1. The ID stays on the result and on the estimate line.