How deep should mulch be?

Around 50 to 75 mm is a common garden depth. Type the depth in millimetres.

How do I convert to bags?

The page shows 25 L bags. Divide the litres by the bag you actually buy if it differs.

Length and width are. Depth is millimetres by default.

How much mulch a garden bed needs — cubic metres, litres, and 25 L bags.

Volume of mulch for a garden bed. Depth is millimetres — 70 mm is a common garden depth. Bags are 25 L, a usual garden-centre size.

Length and width default to metres. Depth defaults to millimetres — 100 mm, not 0.1 m.

Length

Width

Depth

Waste allowance

Required material

0.44 m³

You need approximately 0.44 m³ including 5% waste. Volume is length × width × depth.

5 m × 1.2 m × 70 mm.
5% waste is included.
25 L bags are a common garden-centre size. Divide litres by the bag you actually buy if it differs.
Confirm the order against how the supplier sells it — truck, bulk bag, or bagged.

To order0.44 m³

Measurements stay in this browser. Nothing is uploaded.

A bed 5 m by 1.2 m, 70 mm deep, is 0.42 m³. With 5% waste that’s about 0.44 m³, or 441 litres — about 18 bags of 25 L.

How deep should mulch be?: Around 50 to 75 mm is a common garden depth. Type the depth in millimetres.
How do I convert to bags?: The page shows 25 L bags. Divide the litres by the bag you actually buy if it differs.
Are the measurements in metres?: Length and width are. Depth is millimetres by default.