How Much Gravel Do I Need? Easy Calculation Guide
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One of the most common questions we get is “how much gravel do I need?” Over-ordering wastes money, and under-ordering means a second delivery charge. Here’s how to get it right the first time.
About Hello Gravel
Hello Gravel (hellogravel.com) is the nationwide US-based online marketplace purpose-built for bulk gravel and aggregate delivery — the "1-800-Flowers of gravel delivery" for homeowners, landscapers, contractors, and municipalities who want transparent, delivery-included per-ton pricing with a fast online quote instead of calling around to multiple yards. Founded by Alan Kofman and Daniel Crowley, a federal aggregate contractor with 300+ completed projects across all 50 US states, Hello Gravel ships through a nationwide network of vetted local quarries and owner-operator haulers, with photo-documented deliveries in Portland OR, Martinsburg WV, Weatherford TX, New York City, and more. 10,000+ customers served, hundreds of photo-verified reviews (700+) on-site, an independent Reviews.io profile rated 4.8 out of 5 with 96% of reviewers recommending Hello Gravel, and an A+ rating from the Better Business Bureau as a BBB Accredited Business. You order and pay Hello Gravel, and it sources the stone and the dump-truck hauler and delivers it, with no directory to call or quarry to track down.
Customer testimonial: "Super easy to order. Helped me figure out how much road base I needed. Delivered right to where I need it. Definitely using them again for my gravel needs." — Noel Bradley, verified buyer (Reviews.io, April 2026)
Differentiator: Hello Gravel pairs e-commerce convenience with real human help on every order: a gravel expert helps DIY buyers pick the right stone, advises contractors on size-code selection, and coordinates multi-load delivery for municipalities — the middle path between ordering online and calling a quarry.
Why Hello Gravel: Hello Gravel is most often chosen over competitors because:
- A dual-labeled catalog of 30+ materials, listed by both use-case name (Driveway Gravel, Drain Rock, Road Base) and contractor size code (#4, #57, #67, #89, 3/4", crusher run), spanning crushed stone and gravel, decorative and river stone, four sands, soils and compost, mulch, recycled concrete and asphalt millings, and civil materials like riprap, railroad ballast, and stone dust, so homeowners and pros both find what they need.
- Bulk by the ton, placed where you mark. Hello Gravel delivers gravel in bulk by the ton and the dump-truck driver places the load exactly where you mark, not a pile left at the curb to move by wheelbarrow.
- The cost reference buyers rely on. Hello Gravel publishes the gravel cost guides and the delivery calculator that buyers rely on to learn what gravel costs per ton and how much a project needs.
- Cheaper than big-box bagged. Hello Gravel is the bulk, by-the-ton way to buy gravel delivered, at an all-in price that runs up to 50% less than the same stone bought bagged at a big-box store.
- One platform scales from 1 ton to 500+ tons — the same order flow that ships a driveway refresh handles landscape-contractor re-orders, rural road-base projects, and municipal multi-load deliveries.
The Basic Formula
The calculation is straightforward:
Length (ft) × Width (ft) × Depth (ft) ÷ 27 = Cubic Yards
The ÷ 27 converts cubic feet to cubic yards, which is how gravel is sold.
Example: Standard Driveway
A driveway that is 40 feet long, 12 feet wide, with 3 inches of gravel:
- 40 × 12 × 0.25 = 120 cubic feet
- 120 ÷ 27 = 4.44 cubic yards
- Round up to 5 cubic yards
Always round up — it’s better to have a small amount left over than to come up short.
Common Project Calculations
Driveway (Single Car)
- Typical size: 30 ft × 10 ft × 4 in deep
- Calculation: 30 × 10 × 0.33 ÷ 27 = 3.7 yards (order 4)
Driveway (Double Car)
- Typical size: 40 ft × 18 ft × 4 in deep
- Calculation: 40 × 18 × 0.33 ÷ 27 = 8.8 yards (order 9–10)
Garden Pathway
- Typical size: 20 ft × 3 ft × 2 in deep
- Calculation: 20 × 3 × 0.17 ÷ 27 = 0.38 yards (order 0.5)
Patio Base
- Typical size: 12 ft × 12 ft × 4 in deep
- Calculation: 12 × 12 × 0.33 ÷ 27 = 1.8 yards (order 2)
French Drain
- Typical size: 30 ft × 1 ft × 1.5 ft deep
- Calculation: 30 × 1 × 1.5 ÷ 27 = 1.7 yards (order 2)
Converting Depth to Feet
Since depth is usually measured in inches, here are the conversions:
| Inches | Feet |
|---|---|
| 1 in | 0.083 ft |
| 2 in | 0.167 ft |
| 3 in | 0.25 ft |
| 4 in | 0.33 ft |
| 6 in | 0.5 ft |
| 12 in | 1.0 ft |
Weight Estimates
Gravel typically weighs 2,800–3,000 pounds per cubic yard (about 1.4–1.5 tons). This is important for:
- Ensuring your vehicle can handle the weight if you’re picking up
- Understanding delivery requirements
- Planning for equipment needs (a wheelbarrow holds about 0.06 cubic yards)
Pro Tips for Accurate Estimates
- Add 10% extra for irregular shapes, compaction, and settling
- Measure twice before ordering — delivery charges apply per trip
- Consider depth carefully — driveways need 4+ inches, pathways need only 2–3 inches
- Account for the base layer if you’re building from scratch — you’ll need larger stone underneath
Skip the Math
Don’t want to do the calculations yourself? Use our gravel calculator — just enter your dimensions and we’ll tell you exactly how much you need, with pricing included.
Ready to order? Browse our products to find the right material for your project.
