Cubic Metre to Tonne Converter
This converter turns a volume in cubic metres into a mass in tonnes, which matters because volume and weight are not the same thing until you know how dense the material is. You start by entering your volume in cubic metres, then choosing a material from a preset list that includes concrete, dry and wet sand, dry and wet gravel, topsoil, compacted soil, water, asphalt, crushed stone, steel, aluminium, copper, pine and hardwood timber, mulch or bark, and standard brick, each carrying a typical density in tonnes per cubic metre. If your material is not listed, or your supplier has quoted an exact figure, you can switch to a custom density instead. The calculator instantly returns the mass in tonnes and in kilograms, the density it used, and the volume you entered, alongside a full calculation breakdown showing the formula applied and unit equivalents in grams, short tons and pounds. It is built for jobs such as ordering concrete for a pour, working out how many truckloads of gravel or sand you need, or converting a supplier's volume quote into a weight for freight or handling purposes. Because real-world density depends on moisture content, compaction and particle size, treat the preset figures as reliable planning estimates rather than exact laboratory values, and use the custom density field whenever you have a confirmed figure from your supplier for procurement or structural work.
1. Volume
2. Material
Calculation Breakdown
Unit Equivalents
Common Materials: Tonnes per Cubic Metre
| Material | Density (t/m³) | 1 m³ in tonnes | 5 m³ in tonnes | 10 m³ in tonnes |
|---|---|---|---|---|
| Water | 1.00 | 1.00 t | 5.00 t | 10.00 t |
| Topsoil (loose) | 1.20 | 1.20 t | 6.00 t | 12.00 t |
| Sand (dry) | 1.60 | 1.60 t | 8.00 t | 16.00 t |
| Gravel (dry) | 1.80 | 1.80 t | 9.00 t | 18.00 t |
| Asphalt | 2.30 | 2.30 t | 11.50 t | 23.00 t |
| Concrete (normal) | 2.40 | 2.40 t | 12.00 t | 24.00 t |
| Aluminium | 2.70 | 2.70 t | 13.50 t | 27.00 t |
| Steel | 7.85 | 7.85 t | 39.25 t | 78.50 t |