Gravel & Aggregate Calculator
Calculate precise gravel volume, weight, bulk bags, density factors, weed membrane, and project costs.
1 Define Gravel Coverage Zones
| Zone Label | Length (m) | Width (m) | Depth (cm) | Action |
|---|
L/W Unit:
Depth Unit:
2 Gravel Type & Density Selection
3 Packaging & Spillage Buffer
4 How much will the gravel cost you?
€
€
€
Gravel Bed & Sub-Base Cross-Section View
L: Length
W: Width
Depth: Bed Layer
Estimated Materials Required
Total Surface Area:
0.00 m²
Net Volume Needed:
0.00 m³
Total Volume (Inc. Buffer/Compaction):
0.00 m³
Total Weight Needed:
0.00 Tonnes
Weight in Kilograms / Imperial:
0 kg / 0 lbs
Bulk Jumbo Bags (850kg):
0 Bags
Small Handy Bags (25 kg / 50 lb):
0 Bags
Weed Fabric Membrane Needed:
0.00 m²
Total Estimated Gravel Cost:
€0.00
Standard Gravel Yield & Depth Guidelines:
- Garden Paths & Borders: Recommended depth is 50mm (2 inches) for 10-20mm decorative gravel.
- Driveways & Car Parking: Recommended depth is 50mm - 75mm (2 to 3 inches) laid over a 100-150mm compacted MOT Type 1 sub-base layer.
- Bulk Bag Coverage: A standard 850kg bulk bag of gravel covers approximately 10 to 12 m² at a standard 50mm depth.
- Density Rule of Thumb: Loose dry crushed gravel averages 1.68 tonnes per m³ (or approx 1.6 to 1.8 t/m³ depending on stone type).
