Tree Mulch Ring & Volume Calculator (Circular Bed Estimator)

Estimate mulch volume for circular tree rings and rings around landscaping.

Interactive Material & Cost Estimator

Density: 700 lbs/yd³ (0.35 tons/yd³)

1. Select Project Area Shape

Length (Feet)

Width (Feet)

Desired Depth (Inches)

Waste / Cut / Compaction Buffer

2. Select Package / Unit Size

Price / Unit ($)

Bulk / yd³ ($)

Delivery ($)

Estimated Material Needed 2 sq ft @ 3" depth (+10% buffer)

Bulk Volume (Cubic Yards) 0.02 0.6 cubic feet

Estimated Total Weight 0.01 US Tons (14 lbs)

Store Bag Count 1 bags (2 cu ft)

Pallet Estimate (56 bags) ~0.02 pallets

Estimated Project Material Cost Bulk Saves $4

Retail Package Total $4.47 Before local sales tax

Bulk + Truck Delivery $0.77 Includes $0 delivery

Instant pre-calculated material estimates for common US residential project sizes before compaction buffer:

Typical US Project	Area	Depth	Volume	Weight	Store Bags
Standard Tree Ring (5 ft Outer Diameter)	5 ft Ring @ 3" Depth	3 inches	0.24 cu yd	170 lbs	4 bags (2 cu ft)

Ring Volume = [π × (Outer Radius)² - π × (Trunk Radius)²] × (Depth ÷ 12)

Calculates annular ring volume for circular tree beds, subtracting the inner tree trunk footprint.

Never pile mulch high against tree bark like a volcano. Keep mulch 3 inches away from the trunk flare to prevent bark rot and rodent nesting.

A 4 to 5-foot diameter tree ring at 3 inches depth requires roughly 3 to 4 bags of 2 cu ft mulch.