DIY Quantity Calc

Mulch calculator for garden beds

Cubic yards and bags of mulch for a bed. Change the numbers and the answer updates; the starting values are only an example.

15 ft4 ft3 in
Measurements
Read it from the bag label; bags differ.

Shopping list

Volume15cubic feet
Volume0.56cubic yards
Bags to buy8bags

How it is worked out

  1. Volume in cubic feet is length times width times depth, with the depth divided by 12.
  2. Cubic yards are cubic feet divided by 27.
  3. The bag count is the volume divided by the size on the bag, rounded up.

Worked example

With the starting values, a bed 15 ft by 4 ft and 3 inches deep is 15 cubic feet, which is 0.56 cubic yards. At 2 cubic feet per bag that is 8 bags.

Good to know

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