Tools / Gravel, soil & mulch calculator
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Gravel, soil & mulch calculator
Enter the area and the layer depth. Weights use typical bulk densities – your supplier's data sheet takes precedence.
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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.
How to use it
- Choose the material.
- Enter the area in m² and the layer depth in cm.
- Read volume, approximate weight and number of bags.
Your inputs live only in the link, not on our server.
Last checked: October 2026. Found a mistake? Use the form below – we fix confirmed errors and update the date.
Frequently asked questions
How much gravel for 10 m² at 5 cm?
0.5 m³ – about 0.85 tonnes of gravel.
How deep should mulch be?
Usually 5–10 cm to suppress weeds.