OhMyCalc

Mulch Calculator

Calculate the volume, weight, and number of bags of mulch needed for a garden bed.

How to Use the Mulch Calculator

  1. Measure the total area of the garden bed in square metres.
  2. Enter the desired mulch depth in centimetres (typically 5–10 cm).
  3. Click Calculate to see volume, weight, and number of bags.
  4. Use the bag count to plan your purchase.

Anwendungsfälle

Formel

Volume (m³) = Area (m²) × Depth (cm) / 100. Weight (kg) = Volume × 400. Bags = ceil(Volume / 0.05).

Häufig gestellte Fragen

How deep should mulch be applied?
A depth of 5–10 cm is recommended for most garden beds to suppress weeds and retain moisture.
How heavy is a bag of mulch?
A standard 50 L bag of mulch weighs approximately 20 kg (at 400 kg/m³).
Is it free?
Yes, all calculators on OhMyCalc are completely free.