Cubic Metres to Tonnes Converter
Instantly and accurately calculate the weight of topsoil, MOT Type 1, gravel, and sand in tonnes based on volume (m³). Essential for construction and landscaping.
Convert Aggregate Volume to Weight
Enter the volume of your material in cubic metres below to get an instant, accurate estimate of its total weight in metric tonnes.
Aggregate Weight Estimator
Fill in your project details to see the estimated weight breakdown
Length × Width × Depth of your area
Select the specific material
Standard UK industry average density
Estimated Total Weight
Breakdown based on standard aggregate densities
Common Aggregate Densities
Standard approximate densities for common UK construction and landscaping materials. Use this to understand how different materials compare in weight.
| Material Type | Density (Tonnes/m³) | Density (kg/m³) | Common Use |
|---|---|---|---|
| MOT Type 1 | 1.70 | 1,700 | Driveway sub-base, path foundations |
| Topsoil (Screened) | 1.30 | 1,300 | Lawn turfing, garden beds, planting |
| Gravel / Pea Gravel | 1.60 | 1,600 | Decorative landscaping, drainage |
| Sharp Sand | 1.60 | 1,600 | Concrete mixing, block paving |
| Building / Soft Sand | 1.50 | 1,500 | Mortar, bricklaying, rendering |
| Crushed Concrete | 1.50 | 1,500 | Eco-friendly sub-base, fill material |
Aggregate Conversion FAQ
Everything you need to know about converting construction volumes to weight and ordering materials.
To convert cubic metres (m³) to tonnes, multiply the volume by the specific density of the material in tonnes per cubic metre. For example, MOT Type 1 has a density of approximately 1.7 tonnes/m³, so 2 m³ of MOT Type 1 weighs 3.4 tonnes.
One cubic metre of compacted MOT Type 1 aggregate typically weighs between 1.6 and 1.8 tonnes, with 1.7 tonnes being the standard industry average used for estimation and ordering in the UK.
Yes, significantly. Wet topsoil, sand, or gravel can weigh up to 15–20% more than dry materials due to water retention. Always account for moisture content and potential compaction when ordering materials for construction or landscaping.
Since standard gravel has a density of approximately 1.6 tonnes per cubic metre, one tonne of gravel is equal to about 0.625 cubic metres (calculated as 1 ÷ 1.6).