Free Calculator Tool

Bulk Material Calculator
Cubic Yards, Tons & Bags

Enter your project dimensions and get the exact amount of material you need — in whatever unit your supplier uses.

River Rock Lava Rock Mexican Beach Pebbles Pea Gravel Mulch Lawn Sand Exotic Pebbles Decomposed Granite

How much do you need?

Step 1 of 4
How is your material sold?
Choose the option that matches what you’re ordering.
Step 2 of 4
What type of material?
This helps us calculate the right weight and bag quantities.
Step 2 of 4
What size are the bags?
Check the bag label if you’re not sure.
Step 3 of 4
What’s the total square footage?
Add the length × width of all the beds and add them together.
Step 4 of 4
How deep do you want the coverage?

We recommend ordering 10–15% extra to account for settling, uneven ground, and waste.

Pricing isn’t currently listed online.

Call your store for a quick quote
Stone PlusJacksonville • Palm Coast • Middleburg

Stone Plus carries one of the largest selections of bulk landscape rock, gravel, exotic pebbles, mulch, and hardscape supply in Northeast Florida — available by the cubic yard, by the ton, or by the bag.

3 locations in Northeast Florida  •  Nationwide shipping available
Shop Bulk Materials →
About this calculator

Works for any bulk landscape material

Whether you’re ordering river rock by the cubic yard, Mexican beach pebbles by the ton, or picking up bags of mulch, this calculator gives you the right number in the right unit — with accurate weight estimates based on your specific material type.

Common materials

River Rock & Gravel

Sold by the cubic yard. Recommend 3" depth for 1–3" stone.

Shop River Rock →

Mexican Beach Pebbles

Sold by the ton. Dense material — approx. 105 lbs per cu ft.

Shop Exotic Pebbles →

Building Materials

Sold by the ton. Works well at 2–3" for pathways and beds.

Shop Building Materials →

Gravel & Crushed Rock

Sold by the cubic yard. Fine material; 2" depth gives solid coverage.

Shop Gravel →

Mulch

Sold by the cubic yard in bulk or in 2–3 cu ft bags.

Shop Mulch →

Lawn Sand & Soil

Sold by the ton or cubic yard. Light application at 1" is common.

Shop Soil →
Common questions

Frequently asked questions

Multiply length (ft) × width (ft) × depth (ft), then divide by 27. Our calculator does this automatically — just enter your square footage and depth.
It depends on the material. Most gravel weighs around 100 lbs per cubic foot, so one cubic yard weighs roughly 2,700 lbs — about 1.35 tons. Lighter materials like lava rock weigh significantly less.
For 1–3 inch rock, a minimum of 3 inches deep is recommended. Smaller materials like pea gravel work at 2 inches. Mulch performs well at 2–3 inches. Lawn sand is typically top-dressed at about 1 inch.
Approximately 36 five-gallon buckets equal one cubic yard of material.
Cubic yards measure volume. Tons measure weight. Mulch and soil are typically sold by the cubic yard; heavier materials like beach pebbles are often sold by the ton.
Yes — we always recommend adding 10 to 15% to your calculated amount for uneven ground, settling, and waste during spreading.
A cubic yard of gravel typically weighs between 2,400 and 2,900 pounds depending on the material and moisture content.