How do I calculate how much gravel I need?

Multiply length × width × depth (in feet) for cubic feet, divide by 27 for cubic yards, then multiply by density (~1.4 tons/yd³) for weight.

How deep should gravel be for a driveway?

Most gravel driveways use 4–6 inches of compacted base gravel. Footpaths need 2–3 inches; decorative beds 1.5–2 inches.

How many tons are in a cubic yard of gravel?

Dry gravel typically weighs about 1.4 tons (~2,800 lbs) per cubic yard. Wet or denser stone can weigh more — confirm with your supplier.

Should I order extra gravel?

Yes. Ordering 5–10% extra covers compaction, settling, and irregular edges so you are not short mid-project.

Can I use a gravel calculator for crushed stone or pea gravel?

Yes. Volume math is the same. Adjust the density (tons per cubic yard) to match the material your supplier quotes.

How do I convert inches of depth to feet?

Divide depth in inches by 12. Example: 4 inches = 0.333 feet. All dimensions must use the same unit before multiplying.

What is the difference between cubic yards and tons?

Cubic yards measure volume; tons measure weight. Suppliers may sell by either — convert using material density (typically ~1.4 tons per cubic yard for dry gravel).

Gravel Calculator: Cubic Yards, Tons & Depth Guide

Ordering gravel by guesswork means a second delivery — or a pile you paid for but never use. A free gravel calculator converts length, width, and depth into cubic yards and tons so you order the right amount the first time.

Below: recommended depths by project type, the volume formula suppliers use, and how to estimate weight and cost. For flat area measurements first, see our square footage guide.

Estimate gravel before you order

Get cubic yards and tons from length, width, and depth — free and private.

Open Gravel Calculator

How to Calculate Gravel Volume

Measure length and width, decide depth, and convert depth from inches to feet (÷ 12):

Volume (ft³) = Length × Width × Depth (in feet)

Cubic yards = Cubic feet ÷ 27

Example: Driveway 40 ft × 12 ft × 4 in (0.333 ft) = 160 ft³ ≈ 5.9 cubic yards ≈ 8.3 tons at 1.4 tons/yd³.

Recommended Gravel Depth by Project

Driveways: 4–6 inches compacted base gravel.
Walkways: 2–3 inches for foot traffic.
Decorative beds: 1.5–2 inches — coverage without burying plants.
French drains: Depth depends on trench design — follow your drainage plan.

From Cubic Yards to Tons

Tons ≈ Cubic yards × 1.4

1.4 is a common average for dry gravel. Ask your supplier for the exact density — crushed rock and wet loads run heavier. The Cubic Feet Calculator helps when you need gallon or liter conversions for related projects.

Before you place the order

Measure twice — especially depth after grading.
Add 5–10% for compaction and irregular edges.
Use the ToolMars gravel calculator for yards, tons, and optional cost estimates.

Delivery tip: Confirm truck access and dump location. Some suppliers sell by the yard, others by the ton only.

Estimate gravel before you order

Get cubic yards and tons from length, width, and depth — free and private.

Calculate Gravel Needed

Conclusion

Measure your area, pick the right depth for your project, add a compaction buffer, and run the numbers through the ToolMars Gravel Calculator before calling the yard. One accurate order beats two deliveries every time.

Frequently Asked Questions

How do I calculate gravel needed?

L × W × D in feet → cubic feet ÷ 27 → cubic yards × density for tons.

How deep for a driveway?

Most driveways: 4–6 inches compacted base. Paths: 2–3 inches.

Tons per cubic yard?

About 1.4 tons for typical dry gravel. Confirm with your supplier.

Should I order extra?

Yes — 5–10% covers compaction and uneven areas.

Crushed stone or pea gravel?

Same volume math — adjust density to match your material.

Inches to feet for depth?

Divide inches by 12 before multiplying dimensions.

Cubic yards vs tons?

Yards = volume; tons = weight. Convert with material density (~1.4 tons/yd³).