🌿 Mulch Calculator
Mulch is sold by the cubic yard, but garden beds are measured in feet — this calculator bridges the gap. Enter the bed length and width in feet and the mulch depth in inches, and it returns the cubic yards to order.
It also shows cubic feet and how many standard 2-cubic-foot bags that equals, so whether you buy bulk or bagged, you know the number before you reach the store.
How to use this calculator
Enter the length and width of the bed in feet and the mulch depth in inches. The calculator returns cubic yards to order, the equivalent cubic feet, and how many 2-cubic-foot bags that equals.
- Type the bed Length in feet.
- Type the bed Width in feet.
- Set the mulch Depth in inches (3 inches is typical).
- Read the cubic yards result, or the bag count if you buy bagged mulch.
Frequently asked questions
What does the Mulch Calculator compute?
It turns your bed dimensions into the mulch volume you need. You enter length and width in feet and depth in inches, and it returns cubic yards, cubic feet, and the number of standard 2-cubic-foot bags.
What is the formula behind it?
Volume in cubic feet equals length times width times depth in feet (inches divided by 12). Cubic yards equal cubic feet divided by 27. Bags equal cubic feet divided by 2, rounded up.
Can you give a worked example?
A 20 by 10 foot bed at 3 inches deep is 50 cubic feet, which is 1.85 cubic yards, or 25 bags of 2 cubic feet each.
Should I add extra for settling?
Yes, mulch settles and decomposes. Ordering about 10 percent extra is common practice, and rounding up to the nearest half cubic yard keeps delivery simple.