How to Calculate Cubic Yards: Complete Guide
Calculate cubic yards from length, width and depth with one formula, a shortcut for inches, metric conversions, worked examples and common mistakes.
Updated 9 min read
Read the guide →CY Calculator Blog
These CY Calculator guides explain cubic yards, unit conversions and how much mulch, gravel, topsoil, sand or concrete to order, with every step of the arithmetic shown.
Calculate cubic yards from length, width and depth with one formula, a shortcut for inches, metric conversions, worked examples and common mistakes.
Updated 9 min read
Read the guide →What a cubic yard is and how far one goes, for anyone new to ordering bulk material.
A cubic yard is a cube 3 feet on each side, or 27 cubic feet. See how big 2, 5, 10 and 20 yards really are, how they convert and how far they spread.
Updated 11 min read
Find out how much area one cubic yard of mulch, gravel, topsoil or sand covers at different depths, with a coverage chart and an easy formula.
Updated 12 min read
Bags are labeled in cubic feet, trucks in cubic yards and some quarries quote in tons. These guides switch between them.
A cubic yard holds exactly 27 cubic feet. See why, how to convert either way, and how many bags of each common size make up one yard.
Updated 9 min read
Convert square feet or square yards to cubic yards once you know the depth, with one formula, a divisor chart for common depths and worked examples.
Updated 9 min read
How many tons are in a cubic yard of gravel, sand, topsoil, mulch or concrete, how to convert by density, and why wet material weighs more.
Updated 10 min read
See how many bags of mulch, soil, sand and concrete make one cubic yard, for every common bag size, and how to turn any order into a bag count.
Updated 10 min read
The same formula behaves differently once the material is on the ground. Each guide covers depths, weights and common mistakes for one material.
Work out how much mulch you need with the built in calculator, then pick the right depth, see how far a yard goes and compare bags with bulk.
Updated 11 min read
Work out how much gravel a driveway, path or drain needs in cubic yards and tons, with depth guides, a compaction allowance and worked examples.
Updated 10 min read
Work out how much topsoil you need with the built in calculator, plus the right depth for a new lawn or sod, raised beds and leveling, with examples.
Updated 10 min read
How much sand you need for a sandbox, paver base, pool base or leveling, with the area times depth formula, typical depths and worked examples.
Published 8 min read
Work out how much concrete a slab, footing, post hole or step needs in cubic yards and premix bags, with formulas for round and stacked shapes.
Updated 9 min read
Estimate concrete for a slab: measure, pick a thickness, work out cubic yards, add thickened edges and convert to 40, 60 or 80 lb bags.
Updated 10 min read
Ordering bulk material is one of those jobs that looks simple until the truck arrives. Order too little and you pay a second delivery fee for half a yard. Order too much and you spend a weekend finding places to hide a pile of soil. Nearly every one of those mistakes comes down to a measurement taken in the wrong unit or a step skipped in the arithmetic.
These guides use standard estimating methods and show the full arithmetic, so you can check every step against your own measurements. Each one sticks to a single job and points out where people usually go wrong. If you are new to volume calculations, start with the cubic yard calculation guide. If you just want an answer, the cubic yard calculator on our home page does the math for any shape.
Every worked example is recalculated before a guide goes live, and the totals are checked against our own calculators so the articles and the tools agree. Where a figure depends on the material, such as density, compaction or bag yield, the guide gives a typical range rather than a single number and tells you to confirm it with your supplier.
We do not sell materials, so there is no reason for us to push you toward a bigger order. If you spot a number that looks wrong, tell us and we will correct it.
If you have never worked out a volume by hand, start with the step by step cubic yard guide. It explains the formula and the shortcut and gives you the foundation every other article builds on.
If you already have a project in mind, go straight to the matching guide: mulch for garden beds, topsoil for lawns and raised beds, gravel for paths and driveways, sand for paver bedding, or concrete for slabs and pads. Then run your figures through the matching calculator before you call the supplier.
Every guide names its author. Arslan Ashraf, our CEO, writes the material guides on mulch, gravel, topsoil, sand and concrete. Muhammad Asif Khan, who builds the calculators, writes the measurement and conversion guides. Both are introduced on our team page.
Each guide shows the date it was published and, if it has changed since, the date of its last update. We revise a guide when a reader reports a problem or when the matching calculator changes.
Yes. Everything on this site is free, runs in your browser and does not ask you to create an account.
Yes. Each measurement field in the calculators accepts millimeters, centimeters and meters as well as feet, inches and yards, and you can mix units in the same calculation.
Yes. Send it through our contact page and we will consider it for a future guide.
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