Mulch Calculator Cubic Yards
Calculate the exact cubic yards of mulch you need for any garden bed shape. Supports rectangular, circular, triangular, and multiple beds in one calculation.
Reviewed by the Pro Mulch Calculator Editorial Team · Last updated: July 2, 2026
How many cubic yards of mulch do I need for 1,000 square feet? At 3 inches deep: 9.26 cubic yards. At 2 inches: 6.17 yards. At 4 inches: 12.35 yards. Always add 10% for settling - order 10.19 cubic yards at 3 inches.
Mulch Calculator - Cubic Yards
Rectangular, circular, triangular, and multi-bed calculations
Measure across the widest point of your circular bed
Recommended: 2-3 in for beds Β· 3-4 in for weed control
Square Feet to Cubic Yards Converter
Convert any area in square feet directly to cubic yards of mulch at your desired depth. The fastest sq ft to cubic yards mulch conversion tool available.
Formula: Square Feet Γ (Depth Γ· 12) Γ· 27 = Cubic Yards
How to Convert Bed Dimensions to Cubic Yards
Converting bed dimensions to cubic yards needs three measurements: length in feet, width in feet, depth in inches. Multiply all three, divide depth by 12, then divide by 27. One cubic yard equals 27 cubic feet. The Mulch and Soil Council (MSC) sets cubic yard as the bulk standard.
How to Calculate Cubic Yards for Circular Beds
For circular garden beds and tree rings, the calculation uses the area of a circle: Ο Γ radiusΒ². Replace the Length Γ Width portion of the formula with the circular area:
Example: 8 ft diameter bed at 3" β Ο Γ 4Β² Γ 0.25 Γ· 27 = 0.47 cubic yards
Why Cubic Yards - Not Cubic Feet?
Bulk mulch sells by the cubic yard. Bulk costs 30-50% less than bags for projects over 3 cubic yards per NALP guidance. PGMS uses cubic yards for all commercial specs.
How Much Does a Cubic Yard of Mulch Weigh?
One cubic yard weight by type: hardwood 400-600 lbs, rubber 800-1,200 lbs, rock/gravel 2,400-3,000 lbs, straw 200-300 lbs. A half-ton pickup carries 1-2 ydΒ³ of bark safely. Dump trucks haul 7-10 ydΒ³ per load.
Worked Examples
Three worked examples for three bed shapes. Formula: Area x Depth (in) / 324 = Cubic Yards. ISA recommends 10% buffer for settling.
Recommended Depth by Application (USDA + NALP Standards)
Cubic Yards by Depth Chart
Select a quantity below to see the square footage covered at 2, 3, and 4 inches deep. Every quantity from 2 to 40 cubic yards of mulch is included. Formula: Cubic Yards x 324 / Depth (in) = Square Feet covered.
View Full Coverage Reference Table (2-40 Cubic Yards)
| Cubic Yards | Bags (2 cu ft) | @ 2" Deep | @ 3" Deep β | @ 4" Deep |
|---|---|---|---|---|
| 2 cu yd | 27 bags | 324 sq ft | 216 sq ft | 162 sq ft |
| 3 cu yd | 41 bags | 486 sq ft | 324 sq ft | 243 sq ft |
| 4 cu yd | 54 bags | 648 sq ft | 432 sq ft | 324 sq ft |
| 5 cu yd | 68 bags | 810 sq ft | 540 sq ft | 405 sq ft |
| 6 cu yd | 81 bags | 972 sq ft | 648 sq ft | 486 sq ft |
| 7 cu yd | 95 bags | 1,134 sq ft | 756 sq ft | 567 sq ft |
| 8 cu yd | 108 bags | 1,296 sq ft | 864 sq ft | 648 sq ft |
| 9 cu yd | 122 bags | 1,458 sq ft | 972 sq ft | 729 sq ft |
| 10 cu yd | 135 bags | 1,620 sq ft | 1,080 sq ft | 810 sq ft |
| 12 cu yd | 162 bags | 1,944 sq ft | 1,296 sq ft | 972 sq ft |
| 14 cu yd | 189 bags | 2,268 sq ft | 1,512 sq ft | 1,134 sq ft |
| 15 cu yd | 203 bags | 2,430 sq ft | 1,620 sq ft | 1,215 sq ft |
| 20 cu yd | 270 bags | 3,240 sq ft | 2,160 sq ft | 1,620 sq ft |
| 25 cu yd | 338 bags | 4,050 sq ft | 2,700 sq ft | 2,025 sq ft |
| 30 cu yd | 405 bags | 4,860 sq ft | 3,240 sq ft | 2,430 sq ft |
| 40 cu yd | 540 bags | 6,480 sq ft | 4,320 sq ft | 3,240 sq ft |
Cubic Yards to Bags Reference
Enter any unit to convert instantly between cubic yards, cubic feet, and bag counts. One cubic yard equals 13.5 bags of 2 cu ft mulch or 9 bags of 3 cu ft mulch. The Mulch and Soil Council (MSC) standardizes bag labeling - always verify the cu ft printed on the bag label before calculating. Use the Bags to Yards Converter for reverse calculations.
1 cubic yard = 27 cubic feet = 13.5 bags (2 cu ft) = 9 bags (3 cu ft)
How Many Cubic Yards in a Scoop of Mulch?
A scoop of mulch refers to the amount of bulk mulch loaded into a vehicle using a front-end loader bucket at a landscape supply yard. The volume of a mulch scoop varies by the loader equipment - there is no single standard size.
Half-yard bucket on compact track loaders and small skid steers. Common at retail nurseries and small landscape yards.
The most common bucket size. One full scoop = 1 cubic yard. This is the standard "mulch scoop" pricing unit at most suppliers.
Found at high-volume landscape supply centers. Larger buckets fill truck beds and trailers faster for commercial orders.
How Much Does Each Quantity of Mulch Cover? - Complete Guide
One of the most common questions when calculating mulch in cubic yards is: "How much does X yards of mulch cover?" The coverage depends entirely on the depth you apply. Here is a complete breakdown of every common mulch quantity from 2 to 40 cubic yards.
Coverage at common bulk order sizes
The table below lists coverage at the standard 3 inch depth for every common bulk order from 2 to 40 cubic yards. Multiply by 1.5 for 2 inch depth or by 0.75 for 4 inch depth.
- 2 yards = 216 sq ft (~1,200 lbs) - minimum bulk order
- 3 yards = 324 sq ft (~1,800 lbs) - bulk vs bag break-even
- 5 yards = 540 sq ft (~3,000 lbs) - small suburban border
- 10 yards = 1,080 sq ft - one full dump truck load
- 15 yards = 1,620 sq ft - large residential front yard
- 20 yards = 2,160 sq ft - two delivery loads
- 40 yards = 4,320 sq ft - commercial properties, parks, HOA
FAQ
Formula: Length x Width x Depth in inches / 324 = Cubic Yards. A 20 x 10 ft bed at 3 inches = 1.85 ydΒ³.
At 3 inches: 9.26 ydΒ³. At 2 inches: 6.17 ydΒ³. At 4 inches: 12.35 ydΒ³. Add 10% buffer when ordering.
A standard loader scoop holds 1 cubic yard. Small buckets hold 0.5 ydΒ³; large buckets hold 1.5-2 ydΒ³. Confirm with your supplier.
A "yard of mulch" is a cubic yard - 27 cubic feet. One yard covers 108 sq ft at 3 inches deep.
Formula: Square Feet x (Depth in inches / 12) / 27 = Cubic Yards. 500 sq ft at 3 inches = 4.63 ydΒ³.
5 ydΒ³ covers 540 sq ft at 3 inches (a 23 x 23 ft area). It equals 135 cu ft or 68 bags of 2 cu ft.
Dry hardwood weighs 400-600 lbs per ydΒ³, so 1 ton equals 3.5-5 ydΒ³. Wet mulch reaches 1,000 lbs per ydΒ³ - 1 ton = 2 ydΒ³.
1 cubic yard = 27 cubic feet. Bulk sells by yard. Bag sells by cubic feet (2 or 3 cu ft typical).
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