How many tons is 1 cubic yard of gravel?

On average, 1 cubic yard of standard gravel weighs approximately 1.35 to 1.5 US tons (2,700 to 3,000 lbs). The precise weight depends on stone composition, moisture content, and compaction. Pea gravel typically weighs 1.28–1.35 tons per yard, while dense-grade base gravel can reach 1.55–1.65 tons per cubic yard.

How do I calculate how much gravel I need?

To calculate gravel requirements: 1) Measure the length and width of the area in feet. 2) Measure the depth in inches and divide by 12 to get depth in feet. 3) Multiply length × width × depth to get cubic feet. 4) Divide cubic feet by 27 to get cubic yards. 5) Multiply cubic yards by 1.35 to 1.5 to estimate the total US tons required.

How thick should a gravel driveway be?

A standard gravel driveway requires a total depth of 6 to 8 inches. This is typically installed in layers: 4 inches of coarse base rock (like #3 or #4 crushed stone), followed by 2 to 3 inches of compacted #57 stone or crusher run, and a 1 to 2 inch top dressing layer.

How many 50 lb bags of gravel are in a cubic yard?

Because 1 cubic yard of gravel weighs around 2,700 to 2,800 lbs, you will need approximately 54 to 56 bags of 50-pound gravel to equal one cubic yard.

Accurate Commercial Estimator

Gravel Calculator & Material Estimator

Instantly calculate gravel, crushed stone, and base rock requirements for driveways, patios, and landscaping in cubic yards, tons, and metric units.

Project Dimensions

Calculation Shape / Method Step 1

Length

Width

Diameter

Total Area

Depth / Thickness

Surface Area Footprint: 200.00 sq ft (22.22 sq yd)

Estimated Material Density Standard Gravel

Waste & Compaction Allowance:

Calculated Requirements Live Calculation

Primary Commercial Order Volume

1.85 Cubic Yards (yd³)

Standard delivery unit for quarries, aggregate yards & dump trucks.

Weight (US Tons)
2.50 Tons
5,000 lbs (Short Tons)

Weight (Metric)

2.27 Tonnes

2,268 kg (Metric t)

Volume (Cubic Feet)

50.00 ft³

Length × Width × Depth

Volume (Metric)

1.42 m³

Solid volume displacement

~100 Bags

50-lb Retail Bags

~17–25 Loads

Std Wheelbarrows (2-3 ft³)

Current Tool 100 lbs/ft³ • 2,700 lbs/yd³

Gravel Calculator

Standard aggregate estimator for generic driveways, landscaping beds, utility trenches, and patios.

Active Calculator ✓

105 lbs/ft³ • 2,835 lbs/yd³

Pea Gravel Calculator

Smooth, 3/8" rounded river pebbles for barefoot-friendly walkways, dog runs, patio seating, and pipe bedding.

Estimate Pea Gravel →

100 lbs/ft³ • 2,700 lbs/yd³

Crushed Stone Calculator

Angular, machine-fractured stone providing interlocking strength for driveway bases, sub-bases, and concrete.

Estimate Crushed Stone →

130 lbs/ft³ • 3,510 lbs/yd³

Decomposed Granite (DG) Calculator

Heavy, compactable granite fines and rock dust engineered for firm, permeable bocce courts, paths, and xeriscaping.

Estimate Decomposed Granite →

108 lbs/ft³ • 2,916 lbs/yd³

River Rock Calculator

Naturally polished 1"–3" stones for aesthetic dry creek beds, bioswales, perimeter drainage, and water features.

Estimate River Rock →

95 lbs/ft³ • 2,565 lbs/yd³

#57 Stone Calculator

Uniform 1/2" to 1" clean-washed angular aggregate for French drains, septic drain fields, and driveway surfaces.

Estimate #57 Stone →

How Many Tons/Yards of Gravel Do You Need?

Estimating how much gravel or crushed stone you need requires determining your target area's total three-dimensional volume, converting that volume into cubic yards, and then translating it into weight (tons) based on your material's compaction and moisture density.

Quick Rule of Thumb: 1 cubic yard of standard aggregate weighs approximately 1.35 to 1.5 US tons (2,700 to 3,000 lbs) and covers roughly 100 square feet at 3 inches deep.

Step-by-Step Calculation Guide:

Measure the Length and Width: Measure the perimeter of your driveway, pathway, or patio foundation in feet. For irregularly shaped areas, subdivide the space into rectangles or circles.
Determine the Appropriate Depth: Measure your required depth in inches. As a general rule: walkways require 2 to 3 inches, landscape ground cover needs 2 to 3 inches, and vehicle driveways require 4 to 8 inches of gravel base and top layers.
Calculate Cubic Feet: Multiply Length (ft) × Width (ft) × Depth (converted to feet by dividing inches by 12).
Convert to Cubic Yards: Divide the total cubic feet by 27 (since there are 27 cubic feet in one cubic yard). Most commercial landscape suppliers sell bulk aggregates by the cubic yard.
Calculate Total Tonnage: Multiply your cubic yards by the stone's specific density factor (typically 1.35 to 1.45 tons per cubic yard for standard crushed rock).
Include a Compaction & Waste Allowance: Add 5% to 10% extra material to account for ground settling, grade irregularities, compaction under vehicle traffic, and spillover during installation.

How to Calculate Gravel Manually

If you do not have access to an online calculator on the job site, you can calculate the necessary cubic yards and tonnage manually using standard mathematical formulas.

Core Mathematical Formulas by Project Shape

1. Rectangle / Square Shape: Area (sq ft) = Length (ft) × Width (ft)

2. Circular / Round Shape: Area (sq ft) = π × (Diameter (ft) ÷ 2)²

3. Volume & Tonnage (Any Shape / Total Area): Volume (cu yd) = [Area (sq ft) × (Depth (in) ÷ 12)] ÷ 27 Weight (US Tons) = Volume (cu yd) × Density (tons/yd³)

• 1 Cubic Yard = 27 Cubic Feet = 0.76455 Cubic Meters • 1 US Short Ton = 2,000 lbs = 0.90718 Metric Tonnes • Standard Crushed Stone Density = 100 lbs/ft³ = 2,700 lbs/yd³ = 1.35 tons/yd³

Practical Manual Example:

Suppose you are paving a driveway measuring 30 feet long by 12 feet wide with a depth of 4 inches using #57 crushed limestone:

Step 1 (Convert Depth): 4 inches ÷ 12 = 0.333 feet.
Step 2 (Cubic Feet): 30 ft × 12 ft × 0.333 ft = 120 cubic feet.
Step 3 (Cubic Yards): 120 ft³ ÷ 27 = 4.44 cubic yards.
Step 4 (Tons): 4.44 yd³ × 1.4 tons/yd³ = 6.22 US Tons.
Step 5 (With 10% Compaction Buffer): 6.22 × 1.10 = 6.84 Tons (order 7 tons).

Gravel Density Chart

Different types of crushed stone, aggregates, and decorative gravel carry different densities depending on mineral composition (limestone, granite, basalt), particle size distribution, and void space. Use this reference chart to find your specific material weight:

Material Type	Typical Size	Density (lbs/ft³)	Lbs per Cu. Yd.	Tons per Cu. Yd.	Primary Application
Pea Gravel	1/4" – 3/8" rounded	95 lbs/ft³	2,565 lbs	1.28 tons	Patios, walkways, dog runs
#57 Crushed Stone	1/2" – 1" angular	105 lbs/ft³	2,835 lbs	1.42 tons	Driveways, French drains, concrete
Standard Crushed Stone	Mixed 3/4" angular	100 lbs/ft³	2,700 lbs	1.35 tons	General landscaping, pathways
Crusher Run / Base Gravel	Fine dust to 3/4"	120 lbs/ft³	3,240 lbs	1.62 tons	Compacted sub-base for driveways
Decomposed Granite (DG)	Fines to 1/4"	115 lbs/ft³	3,105 lbs	1.55 tons	Stabilized trails, tree surrounds
Washed River Rock	1" – 3" smooth	92 lbs/ft³	2,484 lbs	1.24 tons	Dry creek beds, decorative edging
Riprap / Heavy Stone	4" – 12" heavy	110 lbs/ft³	2,970 lbs	1.48 tons	Erosion control, drainage ditches
Crushed Recycled Concrete	3/4" minus	95 lbs/ft³	2,565 lbs	1.28 tons	Eco-friendly road base and fills

Recommended Gravel Depths by Project Type

Applying an incorrect depth can result in vehicle ruts, pooling water, or uneven shifting underfoot. Use these proven contractor depth specifications for planning:

Residential Driveways (Total 6"–8"): 4 to 5 inches of dense-graded base gravel (#4 or crusher run) topped with 2 to 3 inches of angular #57 limestone.
Garden Pathways & Walkways (2"–3"): 2 to 3 inches of pea gravel or decomposed granite over a layer of commercial geotextile landscape fabric.
French Drains & Septic Trenches (8"–12"): 8 to 12 inches of washed angular stone (such as #57 stone) surrounding a perforated drainage pipe.
Shed or Patio Base (4"–6"): 4 inches of thoroughly compacted crusher run or #411 aggregate to create a firm, level sub-surface.
Decorative Flower Bed Mulch (2"–3"): 2 inches of polished river gravel or volcanic rock for superior weed suppression and moisture retention.

Frequently Asked Questions

One cubic yard of gravel generally weighs between 2,700 and 3,000 pounds (1.35 to 1.5 US tons). Lighter materials like river pebbles or dry pea gravel weigh near 2,500–2,700 lbs/yd³, whereas densely graded base rock with stone dust weighs 3,100–3,300 lbs/yd³.

One cubic yard of clean gravel is roughly equal to 1.4 US tons. When ordering from a quarry or bulk supplier, multiply your calculated cubic yards by 1.4 to calculate the required tonnage.

Since 1 cubic yard weighs approximately 2,700 to 2,800 lbs, you need roughly 54 to 56 bags of 50-lb gravel to cover 1 cubic yard. For larger projects exceeding 1 yard, purchasing bulk gravel delivered by dump truck is significantly cheaper than buying bagged rock at home improvement stores.

Yes. Installing heavy-duty woven geotextile fabric beneath your gravel prevents stones from sinking into the subsoil over time, prevents weed germination, and maintains proper drainage.