Mulch Calculator
Calculate mulch volume for beds, paths, and landscaping
Area Dimensions
Enter pre-calculated square footage for complex shapes
Mulch Options
Cost Estimation
Prices vary by location and mulch type. Update with local prices.
Volume Required
Bags vs Bulk Comparison
About Shredded Bark
Popular organic mulch that breaks down slowly, adding nutrients to soil. Good for flower beds and around trees.
When to Use Mulch Calculator
Garden Bed Refresh
Calculate how much mulch to buy for spring bed preparation. Determine if you need a light 1-inch top-up or a full 3-inch layer after winter decomposition.
Tree Ring Mulching
Use the circle calculator for tree rings. Proper mulching around trees retains moisture and prevents lawn mower damage. Keep mulch away from the trunk.
Pathway Installation
Pathways need deeper mulch (4-6 inches) to suppress weeds and provide comfortable walking surface. Calculate the extra volume needed for high-traffic areas.
Playground Safety
Rubber mulch under play equipment requires specific depths for fall protection. Calculate volume for safety-compliant coverage in play areas.
Budget Planning
Compare bagged versus bulk pricing before purchasing. See exactly how much you can save with bulk delivery and whether the minimum order makes sense for your project.
Complex Landscapes
Calculate multiple areas at once for whole-yard projects. Add up rectangles, circles, and irregular beds to get one total for your shopping list.
Frequently Asked Questions
How much mulch do I need?
Multiply your area's square footage by the depth in feet. For 200 sq ft at 3 inches deep: 200 × 0.25 = 50 cubic feet, or about 1.85 cubic yards. Our calculator handles the math automatically.
How deep should mulch be?
Standard depth is 2-4 inches. Use 2 inches for fine mulches, 3-4 inches for coarser materials. Pathways may need 6 inches. Never pile mulch against plant stems or tree trunks—leave a gap to prevent rot.
Should I buy bags or bulk?
Bulk saves 40-60% on larger projects. The break-even point is typically around 2-3 cubic yards. For small beds, bags offer convenience without leftover material. Consider delivery fees when comparing.
How many square feet does a yard cover?
One cubic yard covers approximately 324 sq ft at 1 inch deep, 162 sq ft at 2 inches, 108 sq ft at 3 inches, or 81 sq ft at 4 inches. Deeper applications cover less area per yard.
What type of mulch is best?
It depends on your needs. Shredded bark is economical and decomposes to enrich soil. Cedar resists insects. Rubber lasts longest but doesn't improve soil. Stone works for xeriscaping but absorbs heat.
How often should I add mulch?
Organic mulches need replenishing every 1-2 years as they decompose. Add 1-2 inches annually to maintain proper depth. Check depth in spring and fall, adding more if it has thinned below 2 inches.
Should I remove old mulch first?
Usually no—decomposing mulch adds organic matter to soil. Just add fresh mulch on top. However, if old mulch is matted, diseased, or exceeds 4 inches total, rake it up or turn it before adding more.
Does mulch attract termites?
Wood mulch doesn't attract termites but can provide habitat if they're already present. Keep mulch 6 inches away from foundations. Cedar and cypress have natural insect-repelling properties if this concerns you.
No comments yet. Be the first to share your thoughts!