Mulch Calculator
Work out exactly how much mulch your beds need — in cubic yards, cubic feet and bags — then compare bagged vs. bulk delivered pricing, add labor, and see the true cost per square foot before you head to the garden center.
| Depth | Cu ft | Cu yd | Bags | Coverage / yd | Bagged | Bulk | Best |
|---|---|---|---|---|---|---|---|
| Calculate to see reference table | |||||||
How to Use the Mulch Calculator
Work out exactly how much mulch your beds need — in cubic yards, cubic feet and bags — then price it bagged against bulk delivered before you leave for the garden center, in four steps.
Measure your beds
Pick a shape — rectangle, circle, half circle, triangle, border strip, or a square footage you already know — and type the dimensions. Add a row for every bed and the area updates as you go.
Set depth & material
Slide the depth to what your beds need, then choose a mulch type to auto-fill typical weight and pricing. Add an overage cushion, and note any old mulch you plan to strip out.
Enter what you’re paying
Put in your bag size and price, the yard’s bulk rate, the delivery fee and sales tax. Leave it on Compare both and the calculator tells you which way is cheaper for your load.
Add labor & save your list
Choose whether you’re spreading it yourself or hiring out, then read the bag count, bulk order, weight, spreading time and cost per square foot. Download the PDF as your shopping list.
What’s Included
Everything you need to buy the right amount of mulch once — from odd-shaped beds to the true cost per square foot.
Any number of beds, any shape
Six shape types cover curved borders, island beds and tree rings. Add a row per bed, see each area on its own, and get one combined total you can actually order against.
Depth slider with live volume
Drag from one to six inches and watch cubic yards, bags and cost move with it — the quickest way to see what an extra inch of coverage really costs you.
Nine mulch types pre-loaded
Hardwood, pine bark, cedar, cypress, dyed, pine straw, compost, rubber and river rock arrive with typical weights and prices filled in. Override any figure with your supplier’s.
Bagged vs. bulk verdict
Prices both routes with tax and the delivery fee included, then says plainly which one wins and by how much — plus the effective cost per cubic yard each way.
Weight, loads & spreading time
Estimates tonnage, how many pickup loads it takes, and the hours to spread it with the crew you have — so you know before you commit whether to haul or have it delivered.
Branded PDF shopping list
Bundles your bed schedule, cost breakdown and a full depth-and-coverage reference table into a clean two-page report you can hand to a supplier or a landscaper.
By the Numbers
A quick snapshot of what this calculator covers under the hood.
plus known sq ft
prices pre-filled
spread 1 inch deep
adjustable 1–6 in
no sign-up needed
Built for the Question “How Much Do I Actually Need?”
Whether you’re mulching one bed on a Saturday, deciding between a pallet of bags and a delivered load, or checking a landscaper’s number, the math is the same — this just does it for you.
Weekend DIY gardeners
Tired of guessing and making a second trip? Measure the beds once, get an exact bag count with an overage cushion built in, and see roughly how long the spreading will take.
Bag vs. bulk decision makers
Not sure whether the delivery fee is worth it? Enter both prices and the calculator settles it, showing the effective cost per cubic yard each way and what you’d save.
Large properties & quote checkers
Mulching several beds or reviewing a landscaper’s bid? Price the job per cubic yard installed, add haul-away and disposal, and compare their number against the material cost.
Order the Right Amount, Once
Seven habits that keep your estimate honest — and your beds healthy.
- 1Measure each bed separately. One averaged rectangle across a curved border almost always overshoots. Add a row per bed and pick the closest shape — a half circle for a tree ring, a border strip for edging — and the totals get far tighter.
- 2Two to three inches is the sweet spot. That’s enough to hold moisture and block light. Go three to four where weeds are a fight, but deeper than that starves roots of air and wastes material you paid for.
- 3Measure what’s already there before topping up. Old mulch settles but doesn’t vanish. Rake and fluff it, check the remaining depth, and buy only the difference — most refresh jobs need an inch or so, not a full three.
- 4Keep a 5–10% cushion. Beds are uneven, mulch settles, and some spills off the wheelbarrow. A small overage costs a few dollars; running short costs you a second trip and a delivery fee.
- 5Check the weight before you haul it. A cubic yard of dry mulch runs a few hundred pounds, but compost and stone run well over a ton — and wet material is far heavier than the estimate. Compare the tonnage against your vehicle’s payload rating, not its bed size.
- 6Bulk usually wins on bigger jobs. A flat delivery fee spread across several cubic yards costs less per yard than the same volume in bags. Run the comparison at your real volume — the crossover point moves with the fee and your bag price.
- 7Never pile mulch against stems or siding. Keep it two to three inches clear of plant stems and tree trunks. Mulch volcanoes around trunks trap moisture, invite rot and pests, and slowly kill the tree they were meant to protect.
Frequently Asked Questions
Answers to the most common questions about mulch volume, depth, pricing and delivery.
How much mulch do I need?
Multiply your bed area in square feet by the depth in feet — that’s inches divided by twelve — to get cubic feet, then divide by 27 for cubic yards. A 200 square foot bed at three inches works out to 50 cubic feet, or about 1.85 cubic yards. The calculator does this across every bed you add, applies your overage percentage, and converts the result into bags and a bulk order at the same time, so you can order from whichever number your supplier uses.
How many bags of mulch are in a cubic yard?
A cubic yard is 27 cubic feet, so it takes 13.5 of the standard two cubic foot bags to fill one. Three cubic foot bags need nine, and one and a half cubic foot bags need 18. Bag sizes vary by material and brand — pine straw, compost and rubber mulch are all commonly sold in different volumes — so check the printed size and enter it in the calculator rather than assuming two cubic feet. Bear in mind that actual fill can run slightly under the printed figure.
Is bagged or bulk mulch cheaper?
Bulk is normally cheaper per cubic yard, but the delivery fee decides it on small jobs. At typical prices, a cubic yard in bags costs meaningfully more than the same volume loose — yet one flat delivery charge can wipe out that gap if you only need a yard or two. Bags also win when you have nowhere to dump a pile, or want to spread the work over several weekends. Enter both prices with your delivery fee and the calculator compares the two totals with tax included and tells you which is ahead.
How deep should mulch be?
Two to three inches suits most planting beds — enough to hold moisture and block the light weed seeds need, without smothering roots. Push to three or four inches where weed pressure is heavy or in open beds with few plantings, and stay nearer two inches around shallow-rooted shrubs and in beds you top up every season. Deeper isn’t better: piled mulch sheds water, cuts air to the soil, and can hide rot at the base of stems. Whatever depth you choose, keep it clear of trunks and siding.
How much does a cubic yard of mulch weigh, and will it fit in my truck?
Dry shredded mulch generally runs somewhere in the range of 400 to 800 pounds per cubic yard, and rain can push that far higher because the material soaks up and holds water. Compost is heavier again, and stone or rubber is heavier still — enough that a single yard can exceed what a half-ton pickup should carry. A standard pickup bed holds roughly two cubic yards by volume, but volume is rarely the limit. The calculator reports estimated tonnage and load count so you can check the number against your payload rating first.
What does it cost to have mulch installed?
Landscapers usually quote mulch installed by the cubic yard, a single price covering the material, delivery and spreading, and the figure swings widely with region, access and how much hand-work the beds need. Set the labor option to priced per yard installed, enter the rate you’ve been quoted, and the calculator shows the full job cost alongside what the same material would cost you loose — which is the honest way to see what the labor is really worth. Spreading it yourself takes roughly an hour per 150 to 250 square feet with a wheelbarrow, so factor in your own time too, plus disposal if old mulch is being hauled off.