Mulch Calculator
Estimate mulch quantity in cubic yards or bags
Length of the mulch area
Width of the mulch area
2-3" for existing beds
Cubic Yards
—
cu yd
Cubic Feet
—
cu ft
2 cu ft Bags
—
bags
3 cu ft Bags
—
bags
Estimated Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our calculator converts your area dimensions into cubic yards, bags, and estimated cost.
- Measure length and width of garden beds
- Decide on mulch depth
- Enter measurements
- Compare bulk vs bagged costs
- Order 5-10% extra
Expert Insights
Smart analysis for your Landscaping project
Mulch Depth by Purpose
Weed suppression: 3-4". Moisture retention: 2-3". Decorative: 1-2". AI recommends depth based on your project goals.
Gravel Base Requirements
Driveways: 4-6" compacted base + 2-3" gravel. Paths: 2-3" base + 2" gravel. AI adjusts for vehicle vs foot traffic loads.
Soil Amendment Calculator
AI factors your soil type (clay/sandy/loam) and plant needs to recommend compost and amendment quantities — not just volume.
Calculation Formula
Volume (cu ft) = Length x Width x (Depth / 12)
Volume (cu yd) = Volume (cu ft) / 27
Frequently Asked Questions
How much mulch do I need?
One cubic yard covers 324 sq ft at 1" deep, 162 sq ft at 2", or 108 sq ft at 3".
Is bulk mulch cheaper than bagged?
Bulk ($20-$45/cu yd) is significantly cheaper than bagged ($50-$80/cu yd equivalent). Buy bags only for small areas.
How deep should mulch be?
2-3 inches for existing beds, 3-4 for new beds. Never exceed 4 inches.