Estimate cubic yards, cubic feet, and tons of gravel for an area and depth, in feet or meters, right in your browser.
Gravel Calculator Online
Estimate cubic yards, cubic feet, and tons of gravel for an area and depth, in feet or meters, right in your browser.
The Gravel Calculator runs entirely in your browser. The area, depth, and density you enter never leave your device and nothing is uploaded to ArrayKit.
The Gravel Calculator estimates how much gravel or crushed stone you need to cover an area to a given depth, showing the volume in cubic feet and cubic yards plus the estimated weight in tons. Enter the area, the depth, and optionally a material density, and switch between US units (square feet, inches, pounds per cubic foot) and metric (square meters, centimeters, kilograms per cubic meter) with one toggle — the tool converts internally. It defaults to about 100 lb per cubic foot, a typical figure for loose gravel, but you can adjust the density if your supplier lists a different value. It is built for driveways, walkways, and drainage beds where you need a quick estimate before you order. Everything runs locally in your browser. Treat the totals as an estimate — always verify quantities with your supplier before ordering.
Features
Calculates cubic feet, cubic yards, and estimated tons from area and depth
Toggle between US units (sq ft / in) and metric (m² / cm) — values convert automatically
Adjustable material density, defaulting to ~100 lb/cu ft (about 1,600 kg/m³) for loose gravel
Shows results in both US and metric volume at a glance
Copy a plain-text summary of the area, depth, volume, and weight with one click
Clear error message for missing or zero/negative area or depth
Deeper layers and larger areas update the estimate instantly
Runs entirely in your browser — no project measurements are uploaded
How to use the Gravel Calculator
Choose US or metric units to match how you measured
Enter the area you need to cover
Enter the gravel depth
Adjust the density field if your supplier lists a specific weight for your material
Read the cubic yards, cubic feet, and estimated tons
Example
Input
100 sqft, 4 in deep
Output
1.23 cu yd (~1.67 tons)
A 100 sq ft area at 4 inches deep needs about 1.23 cubic yards, roughly 1.67 tons at ~100 lb/cu ft.
Common errors & troubleshooting
The estimated tons look far too high or too low. — Check the density field — loose gravel is typically around 100 lb per cubic foot (about 1,600 kg/m³), but compacted or wet material can weigh noticeably more.
The Gravel Calculator shows an error instead of a result. — Both the area and the depth must be numbers greater than 0; a blank or 0 field blocks the calculation.
Cubic yards look ten times off after switching units. — Confirm the US/metric toggle matches the units you typed — switching the toggle reinterprets the same numbers in the new unit rather than converting them.
Not sure how deep to enter for a driveway base versus a top layer. — Base layers for driveways are typically 4-6 inches deep, while a decorative top layer is often 1-2 inches — check your project's specification before entering a depth.
Frequently asked questions
What is the Gravel Calculator?
It is a tool that estimates the volume of gravel or crushed stone needed to cover an area to a given depth, showing cubic feet, cubic yards, and an estimated weight in tons based on a material density.
How does the Gravel Calculator estimate tons of gravel?
It multiplies the volume in cubic feet by the material density (in pounds per cubic foot, default ~100) and divides by 2,000 to convert pounds to US tons.
Can the Gravel Calculator work in metric units?
Yes. Toggle to metric to enter area in square meters, depth in centimeters, and density in kilograms per cubic meter — the calculator converts internally and still reports cubic yards and tons.
What density should I use in the Gravel Calculator?
The default of about 100 lb per cubic foot (roughly 1,600 kg/m³) suits typical loose gravel and crushed stone. If your supplier lists a density for the specific material, enter that for a more accurate weight.
Is the Gravel Calculator accurate enough to order gravel?
It gives a solid planning estimate based on the area, depth, and density you enter. Always verify the measured area and add a margin for compaction or waste before placing an order.
Does the Gravel Calculator upload my project measurements anywhere?
No. The Gravel Calculator runs entirely in your browser — the area, depth, and density you enter never leave your device and are not uploaded to ArrayKit.
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