Gravel Driveway Calculator
Calculate gravel volume, weight, and cost easily
What This Calculator Actually Computes
This tool converts all dimensions into cubic yards, the standard unit used by gravel suppliers. From there, it estimates total weight and cost using realistic industry averages.
Gravel Needed (Volume)
This is the total amount of gravel required to cover your driveway at the selected depth, shown in cubic yards. Most suppliers sell gravel by the cubic yard or by the ton, making this value essential for ordering.
Gravel Needed (Weight)
Weight is calculated using an average gravel density of approximately 1.35 tons per cubic yard. Actual weight can vary depending on stone type, moisture, and compaction, but this estimate is accurate enough for ordering and delivery planning.
Estimated Material Cost
If you enter a price per cubic yard, the calculator multiplies it by the total volume to give you an approximate material cost. Delivery fees, taxes, and spreading services are not included.
Choosing the Right Gravel Depth
Depth has the biggest impact on how much gravel you need and how well your driveway performs over time.
Typical driveway depth guidelines:
- 2–3 inches – Light foot traffic or decorative paths
- 4 inches – Residential driveways with occasional vehicle use
- 5–6 inches – Heavy vehicles, trucks, or long-term durability
- 6+ inches – Poor soil conditions or commercial use.
For best results, depth should be measured after grading and before compaction. Keep in mind that gravel settles over time, so many contractors recommend adding slightly more than the minimum depth.
Volume vs Weight When Ordering Gravel
Some suppliers sell gravel by volume, while others sell by weight. This calculator shows both so you can communicate clearly with any supplier.
- Cubic yards are best for visualizing coverage area
- Tons are commonly used for delivery limits and truck capacity
If your supplier prices by the ton, use the weight estimate shown. If they price by the yard, use the volume result.
Common Gravel Types and Their Uses
Different gravel types affect drainage, stability, and appearance. While this calculator works for all gravel varieties, choosing the right material matters.
- Crushed stone – Excellent compaction and durability
- Pea gravel – Decorative but prone to shifting under tires
- Road base / crusher run – Ideal foundation layer
- River rock – Aesthetic use, not recommended for driveways
For driveways, angular stone is usually preferred because it locks together better than rounded gravel.
How to Measure Your Driveway Correctly
Accurate measurements lead to accurate results. Follow these steps before entering values:
- Measure length from entrance to end of driveway
- Measure width at the widest point
- Decide on finished gravel depth
- Use consistent units or let the calculator convert them
For curved or irregular driveways, break the area into rectangles, calculate each section, then add them together.
Cost Planning Tips
Material cost is only one part of the total project expense. Consider these additional factors:
- Delivery charges (often per truckload)
- Minimum order requirements
- Spreading or grading services
- Geotextile fabric for weed control
- Additional gravel for future top-ups
Why Gravel Weight Can Vary
The calculator uses an average density, but real-world weight depends on several variables:
- Stone size and shape
- Moisture content
- Compaction level
- Dust and fines content
Mistakes to Avoid When Calculating Gravel
- Ignoring compaction and settling
- Measuring depth before grading
- Forgetting base layers
- Ordering exact amounts with no buffer
- Assuming all gravel weighs the same
This calculator minimizes these issues, but thoughtful planning still matters.
FAQs
Q1. How much gravel do I need for a standard driveway?
A: That depends on length, width, and depth. A typical residential driveway often requires between 5 and 15 cubic yards.
Q2. Is gravel cheaper than asphalt or concrete?
A: Yes, Gravel driveways typically cost significantly less upfront, though they may require periodic maintenance.
Q3. Should I compact gravel after installation?
A: Yes, Compaction improves stability and reduces future settling.
Q4. Can I use this calculator for patios or walkways?
A: Absolutely, The math is the same for any rectangular gravel surface.
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