What type of aggregate does this estimate?
This calculator estimates coarse aggregate (crushed stone or gravel) for structural concrete mixes.
Aggregate Quantity Calculator
Calculate coarse aggregate volume and weight required for a concrete pour by dimensions, grade, and wastage.
Aggregate Quantity Calculator Formula
- Concrete Volume
Length × Width × Thickness (converted to m³) - Wastage Allowance
Volume × (1 + Wastage ÷ 100) - Aggregate Volume
Adjusted volume × aggregate ratio per m³ for grade - Aggregate Weight
Aggregate volume × 1550 kg/m³
Assumptions
- Aggregate ratios follow standard nominal mix proportions for each concrete grade.
- Coarse aggregate density is approximated at 1550 kg/m³.
- Gradation, moisture, and compaction are not included in weight estimates.
Frequently Asked Questions
How does grade affect aggregate quantity?
Higher grades use different cement-to-aggregate proportions, changing the aggregate volume per m³.
Should I add wastage for aggregate?
Yes. 5–10% wastage is typical to account for spillage and uneven delivery.