Free Gravel Coverage Estimator

Gravel Coverage Calculator

Estimate how much area your gravel will cover based on quantity, depth, and gravel type. Calculate square feet covered by tons or cubic yards with real-time results.

Calculate Gravel Coverage →

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Gravel Coverage Calculator

Select a mode and enter your details — results update automatically

1 Gravel Amount

Enter gravel quantity

2 Gravel Type & Density

Gravel type

Density: 1.40 tons / cubic yard

Light
1.2 t/yd³ Average
1.4 t/yd³ Heavy
1.6 t/yd³

3 Gravel Depth

Desired depth

Results Dashboard

Coverage Area
250 sq ft
5 tons at 4 inches deep

Gravel Required

5.0 tons

10,000 lbs

Volume

3.6 yd³

96.4 cubic feet

Depth

4 inches

0.33 feet

Note: Coverage estimates assume a level surface with even spreading. Actual coverage varies with gravel type, compaction, moisture content, and installation method. Always add 5–10% extra material for waste.

How Much Area Does One Ton of Gravel Cover?

At different depths, one ton of crushed stone covers a different area. Use this reference chart to estimate coverage based on your desired depth.

Depth	Coverage per Ton	Coverage per Cubic Yard	Best For
2 inches	100 – 120 sq ft	140 – 168 sq ft	Light landscaping cover, garden mulch substitute
3 inches	70 – 80 sq ft	98 – 112 sq ft	Walkways, garden paths, decorative areas
4 inches	50 – 60 sq ft	70 – 84 sq ft	Patios, standard landscaping, dog runs
6 inches	35 – 40 sq ft	49 – 56 sq ft	Driveways, heavy traffic areas
8 inches	25 – 30 sq ft	35 – 42 sq ft	Driveway bases, heavy-duty parking areas
12 inches	18 – 22 sq ft	25 – 31 sq ft	French drains, deep fill areas

Gravel Coverage by Type

Different gravel types have different densities, which affects how much area one ton covers. The table below compares coverage at a standard 4-inch depth.

Gravel Type	Density (ton/yd³)	Coverage per Ton (4")	Coverage per Cubic Yard (4")	Notes
Crushed Stone	1.40	50 – 60 sq ft	70 – 84 sq ft	General purpose, most common
Pea Gravel	1.35	60 – 70 sq ft	81 – 95 sq ft	Lighter density, better per-ton coverage
River Rock	1.25	45 – 55 sq ft	56 – 70 sq ft	Larger voids, lower per-ton coverage
Decorative Gravel	1.30	40 – 60 sq ft	52 – 78 sq ft	Varies by stone size and shape
Crusher Run	1.50	45 – 55 sq ft	68 – 83 sq ft	Compacts firmly, high density

What Determines Gravel Coverage?

Four key factors affect how much area your gravel will cover. Understanding these helps you plan more accurately and avoid surprises.

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Gravel Depth

Depth is the biggest factor. Doubling the depth cuts coverage in half. A driveway at 6 inches covers half the area of a garden path at 3 inches for the same amount of gravel.

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Gravel Density

Different stone types have different weights per cubic yard. Pea gravel (1.35 t/yd³) covers more area per ton than crusher run (1.50 t/yd³) because it's less dense.

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Compaction

Compacted gravel settles and takes up less space than loose gravel. A freshly spread pile may lose 10–20% of its height after compaction, reducing the effective coverage area.

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Installation Method

Machine spreading compacts gravel more than hand spreading. The same ton of gravel spread by hand may cover 5–10% more area, but will settle more over time.

Gravel Coverage Examples

Real-world examples of gravel coverage for common projects using crushed stone at standard depths.

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10' × 10' Patio

100 sq ft at 4 inches deep — a standard patio or seating area in the backyard.

Needs approximately 2 tons

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20' × 50' Driveway

1,000 sq ft at 6 inches deep — a standard two-car gravel driveway.

Needs approximately 28 tons

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5' × 40' Walkway

200 sq ft at 3 inches deep — a garden path connecting different areas.

Needs approximately 3 tons

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3' × 30' French Drain

90 sq ft at 12 inches deep — a typical residential drainage trench.

Needs approximately 5 tons

Gravel Depth Guide by Project Type

Choosing the right depth is critical for both performance and cost. Here are recommended depths for common gravel projects.

Project Type	Recommended Depth	Coverage (1 ton)	Notes
Garden / Decorative	2 – 3 inches	80 – 120 sq ft	Weed suppression, aesthetic ground cover
Walkway	3 – 4 inches	60 – 80 sq ft	Pedestrian paths, garden walkways
Patio	4 – 6 inches	40 – 60 sq ft	Seating areas, outdoor living spaces
Driveway	6 – 8 inches	25 – 40 sq ft	Vehicle traffic, needs compaction
Parking Pad / Heavy Use	8 – 12 inches	18 – 30 sq ft	RVs, heavy vehicles, commercial use
French Drain	8 – 18 inches	12 – 25 sq ft	Drainage trenches with pipe

How to Calculate Gravel Coverage

Understanding the math behind gravel coverage helps you plan projects with confidence. The calculation is based on converting weight to volume, then dividing by depth.

Convert to Volume

Convert your gravel weight (tons) to volume (cubic feet). 1 ton ÷ density (t/yd³) = cubic yards, then × 27 = cubic feet. Example: 1 ton ÷ 1.4 = 0.714 yd³ → 19.3 ft³.

Divide by Depth

Divide the volume by the depth (in feet) to get coverage in square feet. Example: 19.3 ft³ ÷ 0.333 ft (4 inches) = ~58 sq ft per ton.

Adjust for Material

Lighter gravel types (pea gravel at 1.35 t/yd³) give more cubic feet per ton and therefore more coverage. Heavier types (crusher run at 1.50 t/yd³) give less coverage.

Add Waste Allowance

Add 5–10% to the calculated quantity for uneven ground, compaction, and material lost during spreading. This ensures you won't run short mid-project.

COVERAGE FORMULA

Coverage (sq ft) = Volume (cubic feet) ÷ Depth (feet)

Related Gravel Calculators & Guides

Gravel Calculator How Much Gravel Do I Need? Gravel Weight Guide How Deep Should Gravel Be? Gravel Size Chart Gravel Cost Calculator Pea Gravel Calculator French Drain Calculator Paver Base Calculator

GRAVEL COVERAGE FAQ

Frequently Asked Questions

Common questions about gravel coverage, how to measure, and how to estimate the right amount for any project.

Coverage questions answered

How much area does one ton of gravel cover?+

One ton of gravel covers approximately 50–60 square feet at 4 inches deep, 70–80 square feet at 3 inches, or 100–120 square feet at 2 inches. Coverage varies by gravel type—pea gravel covers slightly more area per ton because it's less dense (1.35 t/yd³ vs 1.40 for crushed stone), while river rock covers less. Use the calculator above to get precise coverage for your specific gravel type and depth.

How many square feet does 5 tons of gravel cover?+

Five tons of gravel covers approximately 250–300 square feet at 4 inches deep. At 2 inches for decorative landscaping, it covers 500–600 square feet. At 6 inches for a driveway, coverage drops to about 170–200 square feet. For the most accurate estimate, use the coverage calculator with your specific gravel type and desired depth.

How deep should gravel be?+

Recommended depths: gardens 2–3 inches, walkways 3–4 inches, patios 4–6 inches, driveways 6–8 inches, and French drains 8–12+ inches. Deeper gravel means less coverage per ton, so accurate depth planning is essential. For driveways, a minimum of 4 inches of compacted gravel is typically required for vehicle traffic.

Does gravel size affect coverage?+

Yes, gravel size significantly affects coverage. Smaller stones (pea gravel, #57 stone) pack more densely with fewer voids, covering more area per ton. Larger stones (river rock, #2 stone) have larger voids, reducing coverage per ton. Density also matters—lighter materials at 1.25 t/yd³ give you roughly 10% more coverage per ton than dense materials at 1.50 t/yd³.

How many cubic yards of gravel do I need?+

Calculate cubic yards by multiplying your area (sq ft) by depth (feet) and dividing by 27. For example, 200 sq ft at 4 inches deep (0.33 ft) = 200 × 0.33 ÷ 27 = 2.44 cubic yards. Convert to tons by multiplying by the density (2.44 × 1.4 = 3.4 tons). Use Mode 2 of the calculator above to compute this automatically for any project size.

Is gravel coverage different for driveways and landscaping?+

Yes, coverage differs significantly because the recommended depth varies. A driveway at 6–8 inches covers only 25–35 sq ft per ton, while landscaping at 2–3 inches covers 80–120 sq ft per ton. Additionally, driveways typically require crushed stone or crusher run (denser materials) while landscaping can use lighter decorative gravel, further affecting coverage per ton.

Understanding Tons of Gravel to Square Feet Conversion

Converting tons of gravel to square feet depends on two critical variables: the gravel's density and the depth of coverage. A ton is a weight measurement, while square feet measures area. To bridge these, you must first convert tons to volume (cubic feet) using the material's density, then divide by the depth. For crushed stone at 1.4 tons per cubic yard: 1 ton ÷ 1.4 = 0.714 cubic yards. Multiply by 27 to get 19.3 cubic feet. At 4 inches deep (0.333 feet), that covers 19.3 ÷ 0.333 = 58 square feet. Our gravel coverage calculator per ton handles all these conversions automatically.

Cubic Yards Gravel Coverage Explained

One cubic yard of gravel covers 81 square feet at 4 inches deep, 108 square feet at 3 inches, or 162 square feet at 2 inches. Because a cubic yard is a volume measurement (not weight), it's simpler to calculate area coverage: just divide the cubic yard's volume (27 cubic feet) by the depth in feet. The advantage of buying by cubic yard is that coverage is consistent regardless of density—unlike buying by ton, where lighter materials cover more area. Always ask whether your supplier sells by ton or by cubic yard.

Using a Gravel Coverage Chart for Quick Estimates

A gravel coverage chart (like the one above) gives you quick reference values without doing math. However, these charts typically assume standard crushed stone at 1.4 tons per cubic yard. If you're using pea gravel, decorative stone, or crusher run, adjust the chart values: for pea gravel (lighter), add about 5–10% more coverage per ton; for crusher run (heavier), subtract about 5–10%. The most accurate approach is to use the gravel coverage estimator on this page, which accounts for your specific gravel type and density.

Gravel Coverage for Different Project Types

Each project type has different coverage needs based on usage. A 400 sq ft driveway at 6 inches deep requires about 11 tons of crushed stone, while the same 400 sq ft area used as a decorative garden at 2 inches needs only about 3.7 tons. French drains use the deepest gravel layers (8–18 inches) but typically cover a small area, so total tonnage remains manageable. Always factor in edge restraints, landscape fabric, and a compacted subbase for driveways—these don't affect the gravel coverage calculation directly but are essential for a lasting installation.