Aggregate Calculator UK
Calculate aggregate quantities in tonnes, bulk bags and small bags for ballast, sharp sand, MOT Type 1, scalpings, crushed limestone and gravel. Select your material type for accurate density-based results.
Enter dimensions
Covers cuts, breakages and uneven ground. 10% is a typical starting point.
Aggregate estimate
Enter dimensions to see aggregate estimate
Aggregate types and typical uses
| Aggregate | Density (est.) | Typical use |
|---|---|---|
| MOT Type 1 | 2.1 t/m³ | Sub-bases for patios, driveways |
| Ballast (all-in) | 1.75 t/m³ | Mixing concrete |
| Sharp Sand | 1.6 t/m³ | Mortar, bedding, concrete |
| Scalpings | 1.95 t/m³ | Hardstanding, access tracks |
| Crushed Limestone | 2.0 t/m³ | Sub-base, drainage |
| Gravel / Shingle | 1.65 t/m³ | Drainage, decorative |
Densities are estimates for planning. Actual density varies by source and moisture content.
Related calculators
Calculate sharp sand in tonnes, kg and bags for patios, paving slabs, artificial grass and screeding.
Work out gravel in tonnes and bulk bags for driveways, paths and garden borders.
Calculate MOT Type 1 in tonnes and bulk bags for patios, driveways and sub-bases.
Work out sub-base quantities for patios, driveways and garden paths.
Frequently asked questions
Planning estimates only
These results are estimates for planning purposes only. Actual material quantities can vary based on site conditions, compaction, wastage, product size, installation method and supplier guidance. For structural, safety-critical or regulated work, always consult a qualified professional.