From tape measure to order sheet in three steps
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Measure your area
Length, width, and depth — in feet, inches, meters, or centimeters. Odd shape? Split it into rectangles and add the results together.
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Enter the dimensions
The calculator does the geometry, converts units, and applies an optional 5–10% waste margin, exactly the way contractors pad their own orders.
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Order with confidence
You get the numbers suppliers actually quote — cubic yards, tons, bags, pallets — plus a hint on when ready-mix or bulk delivery beats bags.
Why estimate before you order?
Bulk materials are sold by the cubic yard or by the ton, and delivery fees make second trips expensive. Ordering 10% too little concrete can mean a cold joint in the middle of your slab; ordering a yard too much gravel means moving half a ton of stone by hand. A two-minute estimate protects both your budget and your back.
Each calculator explains the formula it uses and cites its sources, so you can check the math yourself — and every result includes the units suppliers actually quote: cubic yards, tons, and bags.
Numbers you can trace, not a black box
YardCalc doesn't invent constants. Concrete bag yields come from QUIKRETE® published product data (an 80 lb bag yields about 0.60 cu ft). Material densities — gravel at roughly 1.4 tons per cubic yard, sand at about 1.35 — are standard supplier figures. Sod pallet coverage uses the common 450 sq ft pallet. Every tool's "how it works" section shows the formula and where its numbers come from, and each page lists the date its math was last reviewed.
Guides & reference charts
When you want the background behind the numbers — how thick a slab should be, how a gravel driveway is layered, which crushed stone size to order — the guides cover the decisions the calculators can't make for you.
How Many Bags of Concrete in a Cubic Yard?
Bag counts for 40–80 lb bags, with worked examples and a chart.
Mulch Coverage Chart
How much one cubic yard of mulch covers at 1–4 inch depths.
How Thick Should a Concrete Slab Be?
Thickness by use — patio, driveway, garage — plus reinforcement and base prep.
Gravel Driveway: Layers, Depth & Quantity
The three-layer build-up, stone sizes, tonnage math, and drainage details.
Crushed Stone Sizes Explained
What #3, #57, #8, and crusher run mean, and which grade fits your project.
Frequently asked questions
Are these calculators free to use?
Yes. Every calculator on YardCalc is completely free, with no sign-up. The site is supported by advertising.
How accurate are the results?
The volume math is exact geometry. Bag counts use published manufacturer yields, and material weights use standard industry densities. Real-world quantities vary with waste, compaction, and moisture, so we show planning estimates and recommend confirming with your supplier.
Do the calculators work in metric units?
Yes. You can enter dimensions in feet, inches, meters, or centimeters, and results include cubic meters and metric tonnes alongside US units.
Why do the calculators add a waste margin?
Contractors routinely order 5–10% extra to cover spillage, uneven subgrade, cutting waste, and compaction. Running out mid-pour or mid-build is far more expensive than a small surplus, so each calculator offers an optional waste margin and tells you exactly how much it added.
Can I use these estimates to get supplier quotes?
That is exactly what they are for. Results are shown in the units suppliers quote — cubic yards, tons, and bags — so you can call a yard or check store pricing with a real number instead of a guess.