Material Calculators for Concrete, Gravel, Mulch, Soil, Sand and Rock

Choose the right cubic yard calculator for the material you are ordering. This guide compares material weights, common depths, compaction, coverage, delivery units, and the mistakes that cause most over-ordering or short loads.

Quick Answer

Use a material-specific calculator whenever weight, bag count, compaction, or depth matters. One cubic yard is always 27 cubic feet, but one cubic yard of mulch may weigh under 1,000 pounds while one cubic yard of concrete can weigh about 4,050 pounds.

Choose a Material Calculator

Each calculator starts with cubic yards, then adds the material-specific information people usually need before ordering: weight, tons, bags, coverage, cost, and overage.

Concrete Calculator Best for driveways, patios, sidewalks, footings, slabs, and pads. Calculates cubic yards, 60 lb and 80 lb bag counts, weight, cost, and 10 percent overage. Use when thickness and bag yield matter. Gravel and Rock Calculator Best for driveways, walkways, drainage trenches, French drains, road base, and decorative stone. Converts cubic yards to tons and supports compaction planning. Use when suppliers quote by ton. Mulch Calculator Best for garden beds, tree rings, borders, and landscape refreshes. Estimates cubic yards, 2 cubic foot bags, coverage, weight, cost, and overage. Use for 2 to 3 inch landscape layers. Dirt and Soil Calculator Best for topsoil, fill dirt, lawn leveling, raised beds, grading, and backfill. Helps plan settling, moisture weight, and delivery quantities. Use when soil will settle or compact. Sand Calculator Best for paver bedding, pool bases, masonry work, leveling layers, and play areas. Converts cubic yards to weight and tons for delivery planning. Use for thin bedding layers. Tons to Cubic Yards Calculator Best when a supplier gives a quote in tons but your project measurements produce cubic yards, or when you need to check truck load weight. Use for weight-to-volume conversion.

Cubic Yard Material Weight and Depth Chart

Use this table to compare materials before ordering. These are planning averages, not guaranteed delivery weights. Wet material and dense aggregate can weigh substantially more.

Material	Weight per cubic yard	Tons per cubic yard	Common depth	Best for	Extra to order
Concrete	4,050 lb	2.03 tons	4-6 in slabs	Slabs, patios, footings, sidewalks	10%
Gravel	2,800 lb	1.40 tons	3-6 in	Driveways, paths, drainage, base layers	15-20%
Crushed stone	2,700-3,000 lb	1.35-1.50 tons	3-6 in	Road base, French drains, compacted pads	15-20%
Sand	2,700 lb	1.35 tons	1-4 in	Pavers, pools, masonry, leveling beds	10-15%
Topsoil	2,000-2,400 lb	1.00-1.20 tons	4-12 in	Lawns, garden beds, planting areas	10-15%
Fill dirt	2,200 lb	1.10 tons	As needed	Grading, backfill, low spots, berms	15-20%
Mulch	600-900 lb	0.30-0.45 tons	2-3 in	Landscape beds, tree rings, moisture control	0-10%
River rock	2,800-3,200 lb	1.40-1.60 tons	2-4 in	Decorative beds, drainage, dry creek beds	10-15%

How Each Material Changes the Estimate

The volume formula is the same, but the right buying decision changes by material. Here is what to account for before placing an order.

Concrete

Concrete is dense, permanent, and usually ordered with little room for shortage. Thickness drives the estimate more than any other factor. A 10 ft by 10 ft slab at 4 inches deep needs about 1.23 cubic yards before overage; the same slab at 6 inches deep needs about 1.85 cubic yards.

Ordering tip: Add 10 percent for uneven subgrade, spillage, and form variations. For small pours, compare ready-mix delivery against 60 lb or 80 lb bags.

Gravel, Crushed Stone and River Rock

Gravel and stone are often sold by the ton even when projects are measured by cubic yards. Compaction, stone size, and moisture change the final load. Driveways and base layers may need multiple lifts, each compacted before the next layer is added.

Ordering tip: Add 15 to 20 percent for compacted base layers. Decorative river rock usually needs less compaction but more attention to finished depth.

Mulch

Mulch is light compared with soil, sand, or stone, so delivery volume matters more than truck weight. A 2 inch layer refreshes existing beds, while 3 inches is common for new beds and weed suppression. Too much mulch can hold moisture against plant stems and tree trunks.

Ordering tip: One cubic yard equals 13.5 bags when each bag contains 2 cubic feet. Keep mulch pulled back from trunks and foundations.

Topsoil and Fill Dirt

Soil weight varies widely because water is heavy. Topsoil is used where plant growth matters; fill dirt is used where volume and grading matter more than nutrients. Both can settle after spreading, especially when placed in deeper lifts.

Ordering tip: Add 10 to 15 percent for topsoil and 15 to 20 percent for fill dirt when leveling, grading, or compacting.

Sand

Sand is commonly used in thin layers, so small depth changes can swing the order quickly. Paver bedding is often about 1 inch after base preparation, while pool bases and leveling areas may need more depending on the surface.

Ordering tip: Confirm whether you need washed sand, masonry sand, concrete sand, or play sand. The right type matters as much as the volume.

Coverage by Depth: What One Cubic Yard Covers

One cubic yard covers a large area at shallow depth and a smaller area at deeper thickness. This is useful for quick mental checks before you order.

Installed depth	Approx. coverage from 1 cubic yard	Common materials
1 inch	324 square feet	Sand leveling, light topdress
2 inches	162 square feet	Mulch refresh, decorative stone
3 inches	108 square feet	Mulch beds, gravel paths
4 inches	81 square feet	Concrete walkways, gravel base
6 inches	54 square feet	Driveway concrete, compacted base
12 inches	27 square feet	Raised beds, deep fill, grading

Coverage sq ft = 324 / depth in inches

How to Order Bulk Material Without Coming Up Short

A good cubic yard estimate is only part of the job. Delivery constraints, access, moisture, and compaction all affect the final order.

Measure the finished area, not the rough guess.Use the longest and widest points for irregular beds, then split complicated shapes into rectangles, triangles, or circles.
Convert depth before calculating.Depth in inches must be divided by 12 before using the cubic yard formula.
Add overage based on the material.Concrete usually needs 10 percent. Gravel, fill dirt, and compacted soil often need 15 to 20 percent.
Confirm the selling unit.Landscape yards may sell mulch by cubic yard, stone by ton, soil by cubic yard, and bagged material by cubic foot.
Check truck access and drop location.Plan where the load will be dumped before it arrives. Long wheelbarrow routes can change labor, timing, and waste.

Material Calculator FAQs

Which cubic yard calculator should I use for my material?

Use the calculator that matches the material you are ordering: concrete for slabs and footings, gravel for driveways and drainage, mulch for landscape beds, dirt or topsoil for grading and planting, sand for pavers or pools, and tons-to-cubic-yards when your supplier quotes by weight.

How much does one cubic yard of material weigh?

A cubic yard of concrete weighs about 4,050 pounds, gravel about 2,800 pounds, sand about 2,700 pounds, topsoil about 2,400 pounds, fill dirt about 2,200 pounds, and mulch about 800 pounds. Moisture and material blend can change the actual weight.

How much extra material should I order?

For most projects, add at least 10 percent extra. Add 15 to 20 percent for compacted gravel, fill dirt, or soil because those materials settle, spread unevenly, and lose volume during installation.

What is the best depth for each material?

Concrete slabs are commonly 4 inches for patios and walkways and 5 to 6 inches for driveways. Gravel driveways often use 4 to 6 inches, mulch beds 2 to 3 inches, topsoil 4 to 8 inches for lawn repair, and sand 1 to 2 inches for paver bedding.

Are cubic yard weight estimates accurate enough for delivery?

They are useful for planning, comparing quotes, and checking truck weight limits, but suppliers should confirm final weights. Wet soil, damp sand, dense aggregate, and mixed stone can weigh much more than average values.

Can I mix materials in one project estimate?

Yes. Estimate each layer separately. For example, a paver project may need gravel base, sand bedding, and decorative stone, while a landscape bed may need soil amendment and mulch. Add the cubic yards for each material only after calculating each layer at its own depth.

Is a cubic yard the same for every material?

Yes. A cubic yard is always 27 cubic feet of volume. What changes by material is weight, coverage, compaction, bag count, and whether suppliers sell it by cubic yard, ton, or bag.

What should I ask a supplier before ordering bulk material?

Ask about density, moisture, compaction, minimum delivery amount, truck access, dump location, short-load fees, and whether the quoted price is per cubic yard, per ton, or per bag.

Start With the Main Calculator

Enter your dimensions, choose a material, and get cubic yards, weight, cost, and overage in one step.

Open the Cubic Yard Calculator