Gravel Calculator: Volume, Weight and Tons
Estimate how much gravel or crushed stone a rectangular driveway, path or pad needs before you order a load. Enter the length and width in feet, the layer depth in inches, and the material density, then read the volume in cubic feet and cubic yards alongside the weight in pounds and US short tons. Every result updates as you type, so you can compare depths without reloading.
How to estimate gravel
- Type the area length in feet into the first field.
- Type the area width in feet into the second field.
- Set the depth in inches for the gravel layer you want to spread.
- Adjust the density in pounds per cubic foot if you know your material, or leave it at 100.
- Read the Volume, Bulk, Weight and Tons cards, then use Copy estimate to save the numbers.
Examples
10 by 10 ft pad at 6 inches, density 100
length 10, width 10, depth 6 in, density 100
50 cu ft, 1.85 cu yd, 5000 lb, 2.5 tons
40 by 12 ft driveway at 4 inches, density 100
length 40, width 12, depth 4 in, density 100
160 cu ft, 5.93 cu yd, 16000 lb, 8 tons
20 by 3 ft path at 3 inches, density 105
length 20, width 3, depth 3 in, density 105
15 cu ft, 0.56 cu yd, 1575 lb, 0.79 tons
Frequently asked questions
How much does gravel weigh per cubic foot?
Most gravel and crushed stone falls between about 95 and 105 pounds per cubic foot, so 100 is a safe default. Wet, dense or angular aggregate weighs a little more, and a light decorative stone can weigh less, so change the density field if your supplier lists an exact figure.
How deep should a gravel layer be?
Walkways and garden paths usually use 2 to 3 inches. Driveways generally need at least 4 inches, often built up in layers over a compacted base so vehicle weight does not create ruts. Deeper layers mean more tons, so try a couple of depths in the tool to compare.
Is gravel sold by the ton or the cubic yard?
Both are common. Bulk yards often price loose aggregate by the ton, while some suppliers quote by the cubic yard. The calculator reports cubic yards and tons together so you can place an order either way without converting by hand.
Are these US short tons or metric tonnes?
US short tons. The tool divides the total pounds by 2000 to get tons. If your supplier works in metric tonnes, divide the pound figure by 2204.62 instead, or read the pounds value directly and convert.
Should I order a little extra?
Yes. The estimate assumes a level, exactly filled rectangle. Add roughly 5 to 10 percent for compaction, spillage and uneven ground, and round up to the supplier's minimum load so a small shortfall does not force a second delivery.
How do I handle an area that is not a rectangle?
Break the space into rectangles, run each one through the calculator, and add the tons together. For a rough circle, multiply the radius by itself, then by 3.14, and enter that square footage as length times width of one foot each is not needed, just treat the product as your area.
What happens if I enter a zero or a negative number?
Dimensions of zero are allowed and simply return zero volume. Negative length, width or depth, or a density of zero or less, are rejected and the tool shows a short prompt to enter non-negative dimensions and a positive density.
Does the calculator include a base or sub-base layer?
No. It sizes a single layer at the depth you enter. If your project has a separate crushed base under a finer top course, calculate each layer on its own with its own depth and density, then order the two amounts separately.
Is my input sent anywhere?
No. The math runs entirely in your browser using a small pure function, so nothing you type is uploaded or stored. You can use it offline once the page has loaded.
Learn more
- How to Order Gravel by the Ton
Turn a driveway or path measurement into a confident gravel order: depth choices, density, compaction overage and delivery minimums explained.
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