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Calculate how much mulch, soil or gravel you need in cubic yards and bags from the bed area and depth in feet and inches.
How much mulch do I need?
Everything happens on your device: nothing is uploaded to the internet.
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Mulch calculator: what it is for
Enter the length and width of your bed in feet, or the total square footage, and the depth in inches. The calculator shows the volume in cubic feet and cubic yards and how many 2 and 3 cubic foot bags you need, plus the cost if you enter a price.
It works the same for mulch, topsoil, compost, gravel and sand.
How to use
- Enter the length and width in feet.
- Enter the depth in inches.
- See cubic yards, bags and cost.
When to use it
- Mulching garden beds.
- Filling raised beds with soil.
- Ordering gravel for a path.
Frequently asked questions
How deep should mulch be?
2 to 3 inches is the usual recommendation for garden beds. Thinner layers let weeds through; much thicker layers can keep water and air from the roots.
How many bags are in a cubic yard?
A cubic yard is 27 cubic feet: about 13.5 bags of 2 cubic feet or 9 bags of 3 cubic feet.
Is it cheaper to buy in bulk?
For more than 2 or 3 cubic yards, bulk delivery from a landscape supplier is usually cheaper than bags, even with the delivery fee.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.