Gravel, Sand & Aggregate Quantity Calculator
Accurately calculate cubic meters (m³), total tonnage, Big Bags, and 25 kg bags of gravel, sand, or crushed stone with compaction allowance for driveways, patios, and foundations.
1. Shape of Surface to Cover
30.0 m²2. Layer Thickness (cm)
8 cm3. Material Type & Density
1.50 t / m³4. Compaction & Wastage Allowance
Recommended: +10% to compensate for plate compactor settlement and subgrade unevenness.
Une sous-couche de feutre géotextile évite l'enfoncement du gravier dans la terre et bloque les mauvaises herbes.
Calculs basés sur les masses volumiques standardisées du BTP et recommandations professionnelles pour aménagements extérieurs.
How to calculate gravel and sand volume and weight?
Planning a gravel driveway, stone patio, or sub-base foundation requires estimating both cubic meters and total tonnage. Aggregates settle when tamped or compacted with a plate compactor: accounting for a compaction allowance ensures you never run short of material midway through your landscaping project.
1. Flexible Geometric Shapes
Instantly calculate rectangular driveways, circular flowerbeds or enter direct area measured on site.
2. Industry-Standard Material Densities
Built-in specific gravities for crushed limestone, river washed gravel, masonry sand, MOT Type 1 subbase, and decorative mulch.
3. Direct Ordering Packaging Options
Converts cubic volume into bulk delivery tonnage, 1-ton bulk bags, or convenient 25 kg retail bags.
Average densities and application guidelines for construction aggregates
| Aggregate Material | Average Density | Recommended Application | Recommended Depth | Estimated Weight / m² |
|---|---|---|---|---|
| Crushed stone (limestone/granite) | 1.50 t / m³ | Car driveway, parking pad | 8 to 10 cm | 120 to 150 kg / m² |
| River washed pea gravel | 1.60 t / m³ | Garden paths, decorative borders | 4 to 5 cm | 65 to 80 kg / m² |
| Sub-base / MOT Type 1 crusher run | 1.80 t / m³ | Foundation base for paving and tarmac | 15 to 20 cm | 270 to 360 kg / m² |
| Dry building sand | 1.50 t / m³ | Paving screed, mortar mix | 3 to 5 cm | 45 to 75 kg / m² |
| Volcanic lava rock (Pozzolan) | 1.00 t / m³ | Lightweight garden bed mulching | 5 to 7 cm | 50 to 70 kg / m² |
Autres calculateurs pour vos travaux extérieurs et maçonnerie :
Foire Aux Questions - Gravier, Granulats & Sous-couches
What gravel depth is recommended for walkways vs driveways?
For pedestrian garden pathways or patio borders, a depth of 4 to 5 cm (approx 1.5 to 2 inches) of 10 mm or 14 mm gravel is ideal. For vehicle driveways and parking bays, use 8 to 10 cm of angular crushed stone laid over a well-compacted 15 to 20 cm sub-base layer.
What is the difference between crushed gravel and pea gravel?
Crushed gravel has angular, sharp edges that interlock tightly under vehicular traffic, creating a stable, rut-resistant surface. Round pea gravel has smooth edges that roll under wheels, making it more comfortable for bare feet but less stable for heavy car parking.
Why should you always lay a geotextile membrane under gravel?
Geotextile fabric acts as a separation barrier that prevents gravel from sinking into the subsoil while allowing rainwater to drain naturally, and drastically suppresses weed growth from beneath.
How do you calculate gravel compaction settlement?
When vibrated or rolled, voids between aggregate particles diminish, reducing loose volume by 5% to 15%. To compensate for settling and uneven soil trenches, always add a +10% compaction allowance to your calculated net volume.
About the Gravel, Sand & Aggregate Calculator
Automated calculation optimization & decision support
Automated optimization: Smart financial flow and real-cost simulation, dynamic forward-looking amortization schedules and net yield models, with continuous alignment to benchmark thresholds (real-time gold/silver Nisab rates and FX feeds).
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Comprehensive support for flagship currencies and benchmarks: Moroccan Dirham (MAD), Euro (EUR), and US Dollar (USD). For Zakat al-Maal, the Nisab threshold is dynamically assessed using official gold (85g) and silver (595g) benchmark values in local currencies. For lunar date calculations, algorithms include moon-sighting calibrations across North Africa and the Middle East.