Worked example
How Much Mulch for 1000 Square Feet?
This example uses a 50 ft by 20 ft bed to represent 1000 sq ft, with 2 in depth and 10% settling overage.
Landscaping
Calculator inputs
Mulch Calculator Results
Results update in your browser as you edit inputs. They are planning estimates, not complete shopping lists.
Enter project dimensions to calculate material quantity.
Inputs used in this example
- Area: 50 ft by 20 ft, equal to 1000 sq ft.
- Depth: 2 inches.
- Settling / overage: 10%.
- Bag size: 2 cubic feet per bag.
Expected output
The calculator estimates about 166.67 cubic feet before overage, 6.17 cubic yards before overage, 183.33 cubic feet with overage, and 92 bags at 2 cubic feet per bag.
When to adjust this example
- Use 3 inches or more only if that depth is appropriate for the plants and existing mulch level.
- Use cubic yards for bulk mulch and bag count for bagged mulch.
- Irregular beds should be broken into smaller rectangles or measured as equivalent area.
Formula explanation
- Convert 2 inches to 0.167 feet.
- Multiply 1000 square feet by depth in feet.
- Apply the 10% settling overage.
- Divide cubic feet by 27 for cubic yards and by bag size for bag count.
Main calculator
Use the full Mulch Calculator to change dimensions, waste factor, and optional user-entered unit price.
FAQ
Should I buy bulk mulch or bags?
Use cubic yards when buying bulk mulch. Use bag count only when buying bagged mulch with a known bag size.
Does this account for plants already in the bed?
No. Plant displacement and existing mulch depth are not modeled separately.