Pea Gravel Cubic Yards to Tons Calculator

This calculator converts a volume of pea gravel in cubic yards to its approximate weight in tons. You enter the number of cubic yards, and it returns the weight in short tons (US tons) based on the average density of dry pea gravel. The result is an estimate, as actual weight varies with moisture and stone size.

Formula

The conversion uses the average density of dry pea gravel, which is about 2,800 pounds per cubic yard. Since 1 US ton equals 2,000 pounds, the formula is:

Tons = Cubic yards × 1.4

Where:

• Tons = weight in short tons (US tons)
• Cubic yards = volume of pea gravel
• 1.4 = conversion factor (2,800 lb/yd³ ÷ 2,000 lb/ton)

This factor is an industry standard for dry, screened pea gravel. Wet gravel can weigh up to 3,000 lb/yd³, which would give a factor of 1.5.

Worked Example

Using the default value of 1 cubic yard:

1. Start with 1 cubic yard of pea gravel.
2. Multiply by the density: 1 × 2,800 lb = 2,800 lb.
3. Convert pounds to tons: 2,800 ÷ 2,000 = 1.4 tons.

The calculator shows 1.40 tons, matching the formula exactly.

Why the Weight Varies

Pea gravel is small, rounded stones typically 3/8 inch in diameter. Its density depends on several factors:

• Moisture: Wet gravel is heavier. Rain or washing can add 5–10% weight.
• Stone composition: Limestone pea gravel is lighter than basalt or granite.
• Compaction: Loose gravel has more air space. Freshly dumped gravel weighs less than compacted gravel.
• Size consistency: Well-screened gravel packs more tightly than mixed sizes.

For most landscaping projects, the 1.4 factor is accurate enough. If you need a precise weight for trucking or structural calculations, weigh a sample or ask your supplier for the exact density.

How to Use This Conversion

You need the cubic yardage first. To find it, measure the length, width, and depth of the area in feet, then divide by 27 (since 1 cubic yard = 27 cubic feet). For example, a 10 ft × 10 ft area at 3 inches deep:

1. Convert depth to feet: 3 in ÷ 12 = 0.25 ft.
2. Volume = 10 × 10 × 0.25 = 25 cubic feet.
3. Cubic yards = 25 ÷ 27 = 0.93 yd³.
4. Tons = 0.93 × 1.4 = 1.30 tons.

This tells you to order about 1.3 tons for that small patio base. Always round up slightly to account for settling and waste.

Common Mistakes

• Using the wrong ton: A US ton is 2,000 lb; a metric tonne is 1,000 kg (2,204 lb). This calculator uses US tons. If you need metric tonnes, multiply the tons result by 0.907.
• Mixing units: Cubic feet and cubic yards are different. Double-check that your volume is in yards, not feet.
• Ignoring moisture: After a rainstorm, gravel can weigh 10% more. If you’re ordering by weight, dry gravel is the standard.
• Rounding too early: Round only the final answer. Rounding intermediate steps can shift the result by 0.1 ton or more.

How to Order Pea Gravel

Most suppliers sell pea gravel by the cubic yard or by the ton. When ordering, you can use this conversion to compare prices. If a supplier quotes $50 per cubic yard and another quotes $40 per ton, convert one to the other:

• 1 cubic yard = 1.4 tons.
• So $50/yd³ equals about $35.70 per ton.
• The $40/ton price is higher per volume.

Also consider delivery costs. A 10-yard truckload is common for residential projects. For a small walkway, you might need only 0.5 yards, which is about 0.7 tons—often too little for a full truck, so check minimum order quantities.

Frequently Asked Questions

How many cubic yards are in a ton of pea gravel?

Divide 1 by 1.4 to get about 0.71 cubic yards per ton. So a ton of dry pea gravel covers roughly 0.7 cubic yards. If you order a ton and expect a yard, you’ll be short by about 30%.

Will wet pea gravel weigh more?

Yes. Water adds weight without adding volume. Wet gravel can weigh 2,900–3,000 lb per cubic yard, making the conversion factor closer to 1.5. If your gravel is saturated, use 1.5 instead of 1.4.

How deep should pea gravel be for a walkway?

For a residential walkway, 2–3 inches of pea gravel is typical. For driveways, 4–6 inches is recommended to handle vehicle weight. Deeper layers require more gravel, so use the depth in your volume calculation.

Can I use this for other types of gravel?

No, this factor is specific to pea gravel. Crushed stone is denser, around 2,700 lb/yd³ (factor 1.35), while decomposed granite is about 2,950 lb/yd³ (factor 1.475). Use a material-specific factor for accuracy.

Why does my supplier quote in tons but I measured in yards?

Suppliers often sell by weight because trucks are weighed at the quarry. This calculator lets you convert your volume measurement to the weight the supplier uses. Always confirm which unit the price is based on to avoid surprises.

Is 1.4 tons per yard exact?

No, it’s an average. Different gravel sources have different densities. For a precise figure, ask your supplier for the specific gravity or weight per cubic yard of their product. The difference is usually small but can matter for large projects.

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in yd | Cubic yards | yd³ | 1 | 0
out tons | Weight in tons | tons | yd * 1.4 | 2