Gravel & crushed stone
Order the right amount the first time. The calculator turns your area into both the finished volume and the looser quantity you actually order – compaction included – and gives the weight in tonnes for gravel, crushed stone, topsoil or sand.
Gravel & crushed stone – volume and tonnes
Enter the area and depth and we work out the volume in cubic metres and the weight in tonnes. Works for gravel, crushed stone, topsoil and sand – adjust the density to the material.
Gravel and sub-base are delivered loose and compact by ~15–25%, so you order more than the finished (compacted) volume. Density varies: gravel/crushed stone about 1.5–1.8 t/m³, topsoil about 1.2–1.5. Check with the supplier.
This tool gives an estimate and is an aid – not a finished calculation. Always check the result against drawings, applicable regulations, supplier data and your professional experience before giving a binding price, ordering material or using the file. ByggExp is not responsible for decisions made solely on the basis of the tool.
Want help taking this further?
Briefly describe what you need and we’ll help you with a quote, material and next steps – free of charge. Only the contact field is required.
How to work out the quantity
- Measure the area’s length and width in metres.
- Enter the depth in centimetres.
- Choose the material’s density (t/m³).
- See the volume in m³ and the weight in tonnes.
Allow for compaction
Material compacts after laying, so allow a little extra if the depth must hold once the surface is settled. The calculator does this for you: the “to order” figure is the loose quantity, always larger than the finished volume.
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Frequently asked questions
- How do I work out how much gravel I need?
- The volume is length × width × depth in metres. A 10 × 3 m area at 10 cm depth is 3 m³. The weight is the volume times the density.
- How much does a cubic metre of gravel weigh?
- Gravel and crushed stone often weigh about 1.5–1.8 tonnes per m³, topsoil about 1.2–1.5. Enter the density in the calculator.
- Is gravel sold in tonnes or cubic metres?
- Often in tonnes on delivery and in cubic metres when estimating – so the calculator shows both.
- Does it cost anything?
- No, the calculator is free and requires no account.