How do I calculate cubic yards of bedding from square feet and depth?

Multiply length (ft) × width (ft) × depth (in) to get cubic inch-feet, then divide by 12 to get cubic feet, then divide by 27 to convert to cubic yards. Shortcut: length (ft) × width (ft) × depth (in) ÷ 324 = cubic yards. Example: 10 ft × 12 ft × 3 in ÷ 324 = 1.11 yd³. Always add 10–15% for settling before placing your order.

How much does a yard of wood chip mulch weigh and cover?

One cubic yard of wood chip mulch weighs 400–800 lbs depending on moisture content and chip size. It covers approximately 324 sq ft at 1 inch deep, 162 sq ft at 2 inches, or 108 sq ft at 3 inches. Most landscapers apply 2–3 inches deep for weed suppression — plan on 1 cubic yard per 100–160 sq ft for a proper application.

How much bedding does a horse stall need and how often should it be replaced?

A standard 12×12 ft horse stall needs approximately 6–8 inches of bedding initially — about 26–35 cubic feet (roughly 1–1.3 cubic yards). Pine shavings are the most common choice. Daily spot-cleaning removes soiled areas; full strip-outs every 4–6 weeks are typical. Expect to use 1–2 bags of shavings (3–4 ft³ per bag) per horse per week for maintenance, depending on the horse's habits and turnout schedule.

What's the difference between the 1-inch rule and 2-inch rule for garden mulch?

The '2-inch rule' applies to fine-particle mulch (shredded bark, compost) where 2 inches suppresses most weeds. The '3-inch rule' applies to larger wood chips where the layer is less dense. Going beyond 3 inches of mulch can create anaerobic conditions and root problems, and applying mulch too close to plant stems (volcano mulching) causes bark rot. The safest approach: 2–3 inches on soil, keeping mulch 2–3 inches away from all plant stems and tree trunks.

Bedding Material Calculator: Cubic Yards, Cubic Feet, and Bag Count

Calculate how much bedding material you need — in cubic yards, cubic feet, and bags — from area dimensions and depth. Covers garden, landscaping, and animal bedding applications.

Related Calculators

Bedding Calculator
Estimate bedding material volume, cubic yards, bag count and cost from rectangular area, depth, waste and package size.

The Bedding Volume Formula

All volume-based material estimates follow the same rectangular-prism formula:

Volume (ft³) = Length (ft) × Width (ft) × Depth (in) ÷ 12

Volume (yd³) = Volume (ft³) ÷ 27

Bags = Volume (ft³) ÷ Bag size (ft³)

The extra material percentage accounts for settlement, uneven ground, and material loss during spreading.

Common Bedding Depths by Application

Application	Recommended Depth	Notes
Garden mulch (weed suppression)	2–3 in	Less than 2 in loses weed suppression
Wood chip play area	9–12 in	Per ASTM safety standard F1292
Sand under pavers	1 in	Screeded flat for leveling
Horse stall (shavings)	6–8 in	Minimum for cushioning
Chicken coop (pine shavings)	4–6 in	Deep litter method
Rabbit hutch	3–4 in	Hay or shavings
Garden path gravel	2–4 in	After weed barrier

Waste and Settlement Allowances

Material Type	Recommended Extra
Wood shavings / chips	10–15% (compresses 10–20%)
Straw	15–20% (significant settling)
Sand (play/leveling)	5–10%
Pea gravel	5–10%
Rubber mulch	5% (does not settle)

Worked Example

Garden bed: 12 ft × 10 ft, 4 in deep, wood mulch:

Volume = 12 × 10 × 4 ÷ 12 = 40 ft³

Add 15% extra: 40 × 1.15 = 46 ft³ to purchase

In cubic yards: 46 ÷ 27 = 1.70 yd³

In 2 ft³ bags: 46 ÷ 2 = 23 bags

Bulk mulch (by the yard) is typically 30–50% cheaper per cubic yard than bagged for quantities over 3 yd³.

Bulk vs. Bagged Material Cost Comparison

Purchase Method	Approximate Cost	Best For
Bagged (2 ft³)	$5–$9/bag ($67–$121/yd³)	Small projects, clean handling
Bulk delivery (per yd³)	$25–$75/yd³	>3 yd³; landscape mulch, gravel
Bulk pickup	$20–$60/yd³	Has truck or trailer

For animal bedding (shavings, straw), bagged is almost always the practical choice for hygiene and storage reasons.

Frequently Asked Questions

How do I calculate cubic yards of bedding from square feet and depth?: Multiply length (ft) × width (ft) × depth (in) to get cubic inch-feet, then divide by 12 to get cubic feet, then divide by 27 to convert to cubic yards. Shortcut: length (ft) × width (ft) × depth (in) ÷ 324 = cubic yards. Example: 10 ft × 12 ft × 3 in ÷ 324 = 1.11 yd³. Always add 10–15% for settling before placing your order.
How much does a yard of wood chip mulch weigh and cover?: One cubic yard of wood chip mulch weighs 400–800 lbs depending on moisture content and chip size. It covers approximately 324 sq ft at 1 inch deep, 162 sq ft at 2 inches, or 108 sq ft at 3 inches. Most landscapers apply 2–3 inches deep for weed suppression — plan on 1 cubic yard per 100–160 sq ft for a proper application.
How much bedding does a horse stall need and how often should it be replaced?: A standard 12×12 ft horse stall needs approximately 6–8 inches of bedding initially — about 26–35 cubic feet (roughly 1–1.3 cubic yards). Pine shavings are the most common choice. Daily spot-cleaning removes soiled areas; full strip-outs every 4–6 weeks are typical. Expect to use 1–2 bags of shavings (3–4 ft³ per bag) per horse per week for maintenance, depending on the horse's habits and turnout schedule.
What's the difference between the 1-inch rule and 2-inch rule for garden mulch?: The '2-inch rule' applies to fine-particle mulch (shredded bark, compost) where 2 inches suppresses most weeds. The '3-inch rule' applies to larger wood chips where the layer is less dense. Going beyond 3 inches of mulch can create anaerobic conditions and root problems, and applying mulch too close to plant stems (volcano mulching) causes bark rot. The safest approach: 2–3 inches on soil, keeping mulch 2–3 inches away from all plant stems and tree trunks.

Last updated 8/16/2026