Mulch Calculator

Mulch volume and number of bags for garden beds.

Runs in your browser — nothing is uploaded
Units
Bark/wood mulch ≈ 250–500 kg/m³.

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Material estimates only — add waste, confirm quantities with your supplier and follow local building codes. Not an engineering guarantee.

How to use Mulch Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

Volume = length × width × depth, plus the waste allowance.

  • A 5–8 cm (2–3 in) layer is typical for weed suppression.