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Mulch calculator

Enter your beds, get cubic yards and the bag equivalent, then order shredded hardwood mulch in bulk.

Instant results, no form to fillBulk delivery to your door$50 off your first order with FIRSTTIMER50

Quantity calculator

Material: Shredded Hardwood Mulch (0.3 tons per cubic yard) · calculating a different material?

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Shredded Hardwood Mulch

Bulk, sold by the cubic yard, delivered to your driveway

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    One cubic yard of mulch covers 108 square feet at 3 inches deep and replaces 13.5 store bags. Those two numbers do most of the planning. The calculator below does the rest.

    Mulch is sold by volume, not weight. A yard of shredded hardwood weighs only 400–800 pounds yet spreads as far as a yard of stone. Most suburban front-yard bed sets land between 3 and 5 yards.

    How to measure your beds

    1. Measure each bed’s length and width in feet. For a round tree ring, use the diameter. The trunk is a rounding error, so don’t subtract it.
    2. Pick a depth: 3 inches for new beds and weed control, 2 for an annual refresh, 1 for a color touch-up.
    3. Add each bed with the add-area button, calculate, and order the recommended yards.

    The formula, with a worked example

    cubic yards = (Length ft × Width ft × Depth in ÷ 12) ÷ 27
    bags (2 cu ft) = cubic yards × 13.5

    Three beds totaling 500 sq ft at 3 inches: 125 cubic feet, or 4.6 cubic yards. With the cushion the calculator recommends 5.5 delivered. In store bags that would be about 63.

    How much does a yard of mulch cover?

    Sold by the yard, so the table shows coverage per cubic yard:

    Depth1 cubic yard coversBag equivalent
    1 inch324 sq ft13.5 bags per yard
    2 inches162 sq ft
    3 inches108 sq ft
    4 inches81 sq ft

    Recommended depth by use

    ProjectDepthNote
    New beds and weed control3 inchesBlocks light, holds moisture
    Annual refresh1–2 inchesRake and fluff the old layer first
    Around trees2–3 inchesKeep a 3–6 inch gap at the trunk. Piled mulch rots bark.
    Playground paths (wood chips)6 inches or moreLoose fill for cushioning
    Slopes3–4 inchesShredded mulch knits together. Nuggets roll away.

    How much does a yard of mulch weigh?

    Between 400 and 800 pounds depending on moisture, with shredded hardwood averaging around 600 dry. Rain makes it heavier but no bigger, which is exactly why mulch trades in volume. For scale: a full-size pickup bed holds about 2 loose yards.

    Mulch tips from the yard

    • Keep mulch off trunks and stems. The “mulch volcano” holds moisture against bark and invites rot and rodents. Leave a 3–6 inch gap.
    • Stop at 4 inches total. Deeper layers suffocate roots and shed water instead of soaking it in. If the old layer is thick, rake it and top with just an inch.
    • Water new mulch once after spreading. It knits the layer so wind can’t lift it.
    • Buying more than about 15 bags? Bulk costs less, arrives fresher, and skips 15 plastic bags.

    Mulch FAQs

    How much mulch do I need?

    Bed area in square feet, times depth in inches, divided by 324. That is cubic yards. At the standard 3-inch depth one yard covers about 108 square feet, so a 500 sq ft bed set needs about 5 yards.

    How many bags of mulch are in a cubic yard?

    13.5 of the standard 2-cubic-foot bags. A typical 5-yard delivery replaces 67 bags, and bulk usually runs less than half the per-yard price.

    How deep should mulch be?

    3 inches for new beds and weed control. 2 for a yearly refresh. Never more than 4 in total, because deeper layers suffocate roots and repel water.

    How much does a yard of mulch weigh?

    400–800 pounds depending on type and moisture. Shredded hardwood averages about 600 dry.

    Related calculators and products

    Order mulch by the yard

    Shredded hardwood mulch, delivered fresh in bulk. Code FIRSTTIMER50 takes $50 off a first order, or call/text (646) 809-3983.

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