🌿 Mulch Calculator
Calculate mulch volume in cubic yards and bags. Enter area and depth to get weight, bag count, and cost estimation for any landscaping project.
Coverage Area
200
sq ft
Volume
1.9
cu yd
Volume
50
cu ft
Bags Needed
25
bags
Approx. Weight
1,100
lbs
Estimated Cost
—
USD
How to Calculate Mulch Needed
Knowing the right amount of mulch saves money and ensures proper coverage for your garden beds.
Mulch Calculation Formula
Volume (cu ft) = Area (sq ft) × Depth (in) ÷ 12
Cubic Yards = Volume (cu ft) ÷ 27
Bags = Volume (cu ft) ÷ Bag Size
Mulch Coverage Reference
How much area 1 cubic yard of mulch covers at different depths:
| Depth | 1 Cu Yd Covers | Bags (2 cu ft) per 100 sq ft | Best Use |
|---|---|---|---|
| 1 inch | 324 sq ft | 5 bags | Top dressing |
| 2 inches | 162 sq ft | 9 bags | Flower beds |
| 3 inches | 108 sq ft | 13 bags | Standard landscaping |
| 4 inches | 81 sq ft | 17 bags | Paths & playgrounds |
| 6 inches | 54 sq ft | 25 bags | Playground safety |
Frequently Asked Questions
How much mulch do I need?
Measure area in sq ft, choose depth (2-3" for beds). Multiply area × depth ÷ 324 for cubic yards. One cubic yard covers 108 sq ft at 3 inches deep.
How many bags of mulch per cubic yard?
13.5 bags of 2 cu ft mulch = 1 cubic yard, or 9 bags of 3 cu ft. Buy bulk for areas over 200 sq ft to save money.
How deep should mulch be?
Apply 2-3 inches for flower beds, 3-4 inches for paths. Never exceed 4 inches near plants — too deep prevents water from reaching roots.
How much does mulch cost?
Bagged: $3-$7 per bag. Bulk: $20-$45 per cubic yard delivered. Colored mulch costs 20-30% more. Delivery adds $50-$100.
How much area does 1 cubic yard cover?
At 2": 162 sq ft. At 3": 108 sq ft. At 4": 81 sq ft. One yard fills a pickup truck bed about 1/3 full.
What types of mulch are best?
Hardwood bark for gardens, pine bark for acid-loving plants, cedar for insect resistance, rubber for playgrounds, and stone for permanent beds.
How often should I replace mulch?
Organic mulch: 1-2 years. Bark mulch: 2-3 years. Rubber/stone: 5-10 years. Refresh when mulch thins below 2 inches.
How much does mulch weigh?
Dry wood mulch: 400-800 lbs/cu yd. Wet mulch: 800-1,200 lbs/cu yd. Rubber mulch: ~1,200 lbs/cu yd. Stone: ~2,500 lbs/cu yd.