Mulch Calculator
Use this mulch calculator to estimate material for garden beds, tree rings, borders, and landscape refresh projects.
Mulch calculator
Adjust the values to estimate material quantity before buying.
Estimated result
Round up for ordering and keep a small project buffer.
- Bed area
- 200 sq ft
- Adjusted volume
- 52.5 cu ft
- Mulch needed
- 1.94 cu yd
- Bags to buy
- 27 bags
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How this estimate works
This calculator turns your project dimensions into a planning quantity, then applies a waste factor so the final number is closer to what you can actually order.
- Cubic feet = length x width x depth in feet
- Cubic yards = cubic feet / 27
- Bags needed = adjusted cubic feet / bag size
Example
A 10 ft by 20 ft bed at 3 in depth needs about 1.85 cubic yards of mulch before rounding.
Common planning notes
- Do not pile mulch against trunks or siding.
- Fresh mulch settles over time, so depth may change after watering and weather.
- Measure planting beds in sections if they are curved or irregular.
Frequently asked questions
How deep should mulch be?
A 2 to 3 inch layer is common for many landscape beds. Avoid excessive depth around plants and trees.
How many cubic feet are in a cubic yard of mulch?
One cubic yard equals 27 cubic feet.
Is bulk mulch cheaper than bags?
Bulk mulch often costs less per cubic yard, but delivery fees and project size can change the better option.