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Mulch calculator

Calculate mulch volume for rectangular or circular areas, including cubic yards, bag counts and a purchase budget.

On your device · No sign-up
LIVE ESTIMATE

Mulch coverage

Your garden measurements

Use inside measurements. Results update automatically.

Units
Shape
Use the volume printed on the product bag.
Optional extra material, from 0 to 100%.
Shopping summary

Ready for the garden center

12bags to buy

50 L / bag · 0% extra allowance

Space to fill600 L
Including allowance600 L
Volume in whole bags600 L
Extra after allowance0 L
0.6 m³0.785 yd³12 m²
Estimated material cost

Add a bag price to see the budget.

Calculated on your device. No signup or uploads.

How this is calculated

Length × width × depth × quantity. Add your allowance, divide by one bag’s volume, then round up to whole bags.

This is a geometric volume estimate. Choose the layer depth for your material and planting conditions, and measure only the area you will actually cover. The calculator does not subtract paths, trunks or gaps.

A LITTLE GUIDANCE

Less effort. Clearer results.

01 / Mulch coverage

Mulch calculator

  1. Enter the length and width or diameter of the area to cover. Use the quantity field for identical areas.
  2. Choose the spread depth and the volume of one mulch bag. All dimensions stay visible beside their units.
  3. Use the live bag total for bagged mulch, or the cubic yards and cubic meters for a bulk supplier. Download a shopping list when ready.

This is a geometric volume estimate. Choose the layer depth for your material and planting conditions, and measure only the area you will actually cover. The calculator does not subtract paths, trunks or gaps.

Open dedicated tool ↗

FAQ

A few useful things to know.

How many cubic feet are in a cubic yard?

One cubic yard is 27 cubic feet. The calculator shows both so you can compare bagged and bulk mulch.

How many 2 cubic foot bags cover 108 square feet at 3 inches?

The area needs 27 cubic feet, or one cubic yard. Divide by 2 cubic feet per bag and round up: 14 bags with no extra allowance.

Can I use this for gravel or bark?

The volume geometry also applies to a uniform layer of bark or gravel. It does not calculate weight, compaction, load capacity or how much a supplier sells by the ton.