Cubic Yards Calculator

Calculate cubic yards of material needed for a rectangular area given length, width, and depth in inches. Free, instant, no signup.

Formula: Cubic yards = length (ft) × width (ft) × depth (in) ÷ 12 ÷ 27

How to use the Cubic Yards Calculator

  1. Enter your values. Fill in the fields with your numbers.
  2. Calculate. Press Calculate to run the cubic yards calculator.
  3. Use the result. Copy the result or try a related tool next.

Why use our Cubic Yards Calculator

Instant results. Enter your figures and the cubic yards calculator returns an answer in seconds.
Free & private. Runs in your browser — no signup, and nothing is sent to a server.
Accurate. Uses standard formulas so you can rely on the numbers.

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About the Cubic Yards Calculator

The Cubic Yards Calculator turns the length, width, and depth of an area into the volume of loose material you need to fill it, expressed in cubic yards. It exists because bulk landscaping and construction materials such as concrete, topsoil, mulch, gravel, sand, and crushed stone are almost always sold and delivered by the cubic yard, while you measure your project in feet and inches. Rather than juggling unit conversions in your head, you enter your dimensions and instantly see how much to order, avoiding both a half-finished job and a pile of wasted, expensive surplus sitting in your driveway.

Reach for this tool any time you are filling a defined space with a poured or poured-in material. Common jobs include pouring a concrete patio, driveway, or footing; spreading mulch over flower beds; topping a garden with new soil; laying a gravel base or driveway; backfilling a trench; or filling a raised bed. It is equally useful when a supplier quotes you a price per yard and you need to know your true quantity, or when a delivery ticket lists yards and you want to confirm it matches the space you measured. Because the math is identical for every loose material, one calculator covers all of these projects.

Under the hood the calculation is simple geometry. The tool multiplies length by width by depth to get the volume in cubic feet, then divides by 27, because a cubic yard is a cube three feet on each side (3 x 3 x 3 = 27 cubic feet). The key detail is unit consistency: depth is usually given in inches for shallow layers like a 3-inch bed of mulch or a 4-inch slab, so it must be converted to feet (inches divided by 12) before multiplying. For round areas the tool uses pi x radius squared x depth, then divides by 27. The result is the bare geometric volume, which you typically round up and pad before ordering.

Everything is computed locally in your browser the moment you submit your dimensions, so the numbers you type are never uploaded, stored, or shared. As for accuracy, the formula itself is exact, but real-world results depend on your inputs: measure to the same units throughout and account for uneven ground, slopes, and settling. The calculator gives geometric volume only, not weight, so it does not know the density of your specific material. For that reason, treat the figure as a precise starting point and add a waste margin, as described below, before placing your order.

Frequently asked questions

What is the formula for calculating cubic yards?

Multiply length by width by depth in feet to get cubic feet, then divide by 27, since one cubic yard equals 27 cubic feet. If your depth is in inches, divide it by 12 first to convert it to feet.

How do I calculate cubic yards if my depth is in inches?

Convert the depth to feet by dividing the inches by 12 before you multiply. For example, a 4-inch layer is 4 / 12 = 0.333 feet, so a 20 ft x 15 ft area at 4 inches is 20 x 15 x 0.333 = about 100 cubic feet, or roughly 3.7 cubic yards.

How much extra material should I order?

Add a waste margin to the calculated volume. About 10 percent extra is a common allowance for landscaping materials to cover settling, spillage, and uneven ground, while concrete is often ordered with a 10 to 15 percent overage, rounded up to the nearest quarter yard.

How many square feet does one cubic yard cover?

One cubic yard covers about 324 square feet at 1 inch deep, 162 square feet at 2 inches, 108 square feet at 3 inches, and 81 square feet at 4 inches. The deeper the layer, the smaller the area a single yard will cover.

How do I figure cubic yards for a round or circular area?

Use pi (about 3.14159) times the radius squared times the depth in feet, then divide by 27. The radius is half the diameter, so a 10-foot-wide circle has a 5-foot radius.

From our blog

How to Evaluate a Pay Raise: From Percentage to Real Take-Home

By the Super Simple Digital Tools Team · Updated June 2026

When a raise lands in your inbox it usually arrives as a single number, either a percentage or a new salary figure, and that lone number hides a lot. The first move is to translate it into the same units you actually spend money in. A 3% bump on $65,000 sounds modest, but it's $1,950 a year, about $162 a month, and roughly $0.94 more an hour. Seeing all four views at once is the difference between a vague 'okay' and a real decision, and it's exactly what a pay raise calculator is built to surface in a single step.

The second step is benchmarking. A raise only means something relative to two things: inflation and the market. With cost-of-living adjustments running around 2 to 3 percent and the 2026 Social Security COLA set at 2.8%, a raise below that range is effectively a pay cut in buying power. Average employer salary budgets for 2026 sit near 3.5%, so anything meaningfully under that may signal you're being undervalued. Use the calculator to express your raise as a clean percentage, then hold it up against these reference points before you celebrate or negotiate.

Third, separate gross from net. The headline number on your offer letter is pre-tax, and a raise can quietly push part of your income into a higher marginal bracket. Only the dollars above the threshold are taxed at the higher rate, so a raise never reduces your overall take-home, but it does mean you keep less of each new dollar than of your base pay. Federal income tax plus Social Security and Medicare alone trim 7.65% off the top before income tax even applies, so plan around the net figure, not the gross.

Fourth, think in compounding terms for anything long-running. Raises stack on top of each other, so the base you start from matters more than any single year's percentage. Two years of 4% beats one year of 5% followed by a flat year, because the second 4% is calculated on an already-higher number. If you're weighing a job change, calculate the new annual figure and project a couple of years forward; a higher starting salary often outruns a slightly bigger one-time percentage at your current employer.

Finally, use the numbers to negotiate concretely. Walking into a review saying 'I'd like more' is weak; saying 'a 6% increase would bring me to $68,900, which aligns with market data for this role' is specific and hard to dismiss. Run the figures first so you can name an exact target salary, an exact percentage, and what it means per paycheck. The calculator removes the mental math, leaving you free to focus on the case you're making rather than the arithmetic behind it.

  • Enter both your current and proposed salary to get the exact raise percentage, then compare it directly against the 2.8% COLA and the ~3.5% average employer budget for 2026.
  • Always read the per-paycheck number, not just the annual one. A $1,800 raise feels large until you see it's about $69 per biweekly check before tax.
  • Estimate your net by keeping roughly 65 to 80 percent of the gross raise, since FICA alone takes 7.65% before income tax is applied.
  • When comparing a salaried offer to an hourly one, divide annual pay by 2,080 to get a true apples-to-apples hourly rate before deciding.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.

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