Quantity is volume × density.
Length × width × depth produces volume. Cubic yards become estimated tons only after applying a material-density assumption supplied or confirmed by the seller.
On this page Driveway Tool
GRAVEL DRIVEWAY CALCULATOR · FREE PLANNING TOOL
How much gravel
does your driveway need?
Measure the area, choose a depth and supplier density, and receive a clear planning estimate in cubic yards, tons, and truckloads. Then check whether water, grade, or a soft base may be the reason the gravel keeps disappearing.
No address, account, email, or phone number is required to use the calculator.
FREE · NO ADDRESS OR SIGN-IN REQUIRED
How much gravel
might I need?
Measure the length and width in feet, then choose a depth in inches. We’ll show the volume and an estimated weight. No name, address, or sign-in needed.
Save these measurements or open a saved plan
Keep this gravel measurement plan for another visit on this device. Browser storage can be cleared; copy or print important records.
Optional: compare supplier quotes
SAVE AND COMPARE YOUR ENTERED QUOTES
What does each option actually include?
Enter figures from a supplier or written scope. Leave unknown costs blank. Enter 0 only when a charge is confirmed as included elsewhere or not applicable. This tool does not supply local installation prices.
Complete and confirm the quantity calculation above before comparing costs.
The rate uses the main tonnage estimate above. Delivery is a total for the order, not a per-load fee. Enter the combined delivery charge and avoid counting installation twice.
Keep this quote comparison for another visit on this device. Browser storage can be cleared; copy or print important records.
How we work out the amount
Length × width gives square feet. Multiply by depth in inches and divide by 324 to get cubic yards. Add your extra allowance, then multiply by the supplier’s tons per cubic yard.
Example: 100 feet × 12 feet × 2 inches ÷ 324 = 7.41 cubic yards. With 10% extra, that is 8.15 cubic yards. At 1.5 tons per cubic yard, it is about 12.2 tons. The same area at 4 inches uses twice as much.
See a recorded 20 × 25-foot Carrollton project · Understand setup and the complete project price
Water decides whether repairs last.
Federal Highway Administration guidance for unpaved roads explains that inadequate crown can allow ponding, soften material, and lead to potholes. Residential drives still require individual judgment.
A calculator cannot inspect a base.
Soil, subgrade, existing stone, traffic, slope, runoff, culverts, and outlets can change what should be placed and how the driveway should be shaped.
PLAIN ANSWERS BEFORE YOU ORDER
Common gravel
driveway questions.
How does the gravel calculator work?
It adds the area of each non-overlapping rectangular section, multiplies that area by the shared planning depth, converts cubic feet to cubic yards, adds your editable extra-order allowance, and then multiplies by the active supplier conversion in US short tons per loose cubic yard. Calculate different depths or material layers separately.
Why is the tonnage shown as a range?
Aggregate type, gradation, moisture, supplier measurement, actual placed depth, and field compaction vary. The center estimate uses the supplier conversion you entered. The displayed range combines your lower and upper depth and density assumptions with the entered allowance. It is a scenario range, not a statistical confidence interval, product specification or supplier guarantee.
Will adding gravel repair recurring potholes?
Sometimes a surface refresh is appropriate. But if water ponds, enters from uphill, washes along the drive, or softens the base, more gravel may only cover the symptom temporarily. Drainage and surface shape should be checked first.
What depth should I choose?
The tool intentionally does not prescribe one universal depth. A surface refresh, pothole repair, reconstruction, and a new driveway have different needs. Existing base, soil, traffic, slope, drainage, and whether the depth is loose or compacted should determine the section.
Should I use crusher run or clean stone?
They serve different purposes. Crusher run contains fines that can compact into a dense surface or base. Clean stone drains differently and does not bind the same way. Confirm the intended layer and supplier specification before ordering.
Does this calculator size culverts or drainage systems?
No. It does not size pipe, culverts, French drains, retaining structures, or stormwater systems. Those decisions require site conditions and, when appropriate, qualified engineering or permitting review.
USE THE ESTIMATE RESPONSIBLY
Three things to verify
before equipment moves.
Ask for the actual product name, whether its conversion is loose or compacted, moisture or coverage guidance, net material payload, delivery limits, and a safe dumping location.
If work will involve mechanized excavation or grading below the existing surface, Georgia 811 directs people to submit a locate request at least three business days before the planned start, wait for markings, and check every utility response. Marks are approximate, and private lines may require a private locator.
Read the Georgia 811 processThe National Weather Service warns that it is never safe to walk or drive into floodwater. Inspect only after conditions are safe.
Read flood-safety guidanceMETHOD & SOURCES
The quantity calculation is ordinary volume math with a visible, editable density assumption. The driveway-condition screen is educational—not a residential design prescription.