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Free Mulch Calculator

Calculate cubic yards and bags of mulch needed for a garden bed.

Bed length times width times depth gives cubic feet, which is increased by the waste percentage. The result is shown in cubic yards, cubic metres and the number of bags in your chosen size.

How to use the Mulch Calculator

  1. Enter the measurements of the area you are working on.
  2. Read the amount of material needed, including a waste allowance where relevant.
  3. Round up when you buy, and check the figures with your supplier.

About the Mulch Calculator

Calculate cubic yards and bags of mulch needed for a garden bed.

Home and building jobs are easier to price when you know how much material you really need. A quick estimate also helps you avoid buying too little or too much.

Getting started with the Mulch Calculator

Using the mulch calculator takes a minute or two. Your entries are saved in this browser, so you can come back later and carry on.

Tips for better results

A 2 to 3 inch layer is typical, and keep mulch a few inches away from trunks and stems. Bulk delivery is usually cheaper than bags above about 2 cubic yards.

Add 5 to 10 percent for waste, cuts and mistakes.

Measure twice, order once, and check quantities with your supplier.

Privacy and where your data goes

Everything you type into the mulch calculator stays on your own device. Zapxa does not receive your numbers or documents. If you clear your browser data, your saved entries will be removed, so download a PDF of anything you want to keep.

Frequently asked questions

How deep should mulch be?

Two to three inches is common for beds. Thicker layers can smother roots, and the depth field lets you test different amounts.

How many cubic feet are in a cubic yard?

There are 27 cubic feet in a cubic yard, so a bed needing 54 cubic feet takes 2 cubic yards or about 27 bags of 2 cu ft.

Is the mulch calculator free?

Yes. It is free to use with no signup, no watermark and no usage limits.

Is my data private?

Yes. Your inputs are processed in your browser and saved only in its local storage. They are not uploaded to our servers.

Does it work on mobile?

Yes. Zapxa works on phones, tablets and desktops. Use the print button or download a PDF to keep a copy.

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