It’s easy to say order a dump truck of pea gravel to your home, yet this can be way too much or nowhere near the amount you need. In addition, you may think about using a pea gravel calculator formula, yet you still need to know the dimensions of the areas you wish to add your gravel layer.
Besides, not all pea gravel is the same size, so the types of gravel you get could change the outcome you were expecting. While using a pea gravel coverage calculator can seem the easy way, they don’t always offer what you need.
In our guide, you can learn how to calculate your cubic yards on the spot with ease. By the end, you’ll know how to calculate the total cost for your desired depth of gravel, no matter if using regular pea gravel or you want to move up and use decomposed granite or limestone for a unique appearance on driveways or paths around your home. (Learn How To Retain Gravel On A Slope)
How Do I Calculate How Much Pea Gravel I Need?
Being accurate and not wasting stones is essential; you can save money and prevent your gravel from thinning and garden areas showing through.
A pea stone calculator can help determine the total, but it can’t help you measure your driveway project.
Before using any calculator, you can find out here how to take measurements and determine the required amount of pea gravel you need using the formulae detailed here:
- Area = Length x Width
- Volume = Area x Depth
- Weight = Density x Volume
Once you fill in these details, you can then either use a calculator to work out more for you. However, you may already know most of the information, such as volume and weight.
As long as you make an excellent choice in a calculator, all you need is to enter the measurements for your landscaping project!
Once you get to this stage, you could notice a hiccup. What if measurements are in different units?
You could see density is in pounds per cubic feet, and volume is given in cubic yards.
What do you do if your pea gravel calculator in tons doesn’t help?
Calculating how much gravel you need
Many builders and gardeners calculate or estimate the gravel requirement to fill a space or cover an area with a layer of gravel.
In such circumstances, a gravel calculator can help, yet remember that the results are only as good as any measurements and density entered.
The steps are as follows:
- Using a geometrical formula, drawings, or measurements, you can calculate the amount of gravel you need.
- Estimate or study the density of any gravel mix you wish to use. You’ll find the default density is that of pea gravel.
- Multiplying the volume by the density using the same units to calculate the weight.
The best recommendation is to order around 5-6% extra gravel than any calculator estimates.
Square or Rectangle Areas
To figure out how much gravel you’ll need to cover a rectangular area, multiply the volume by the density of the required pea gravel.
As seen in the figure below, the volume formula for a rectangular (or square) box in cubic feet is the height (ft) x width (ft) x length (ft):
To fill a box with a width of 3 feet and a length of 6 feet to a depth of 1 foot, multiply 1-foot x 3 feet x 6 feet = 24ft3 (cubic feet) of gravel, then multiply by the density.
Once you’ve entered the dimensions, a good pea gravel calculator should be able to handle it.
Different types of gravel would give you different results in volume and weight. (Read Preventing Weeds In Gravel Guide)
The calculation is slightly different if the area you want to cover with gravel or the shape you want to fill is spherical:
A figure with a round foundation has a volume equal to its height multiplied by the area of its foundation.
The calculator requires the diameter to calculate the foundation area since the formula is x r2, where r is the radius or diameter/2. The gravel calculator will perform the arithmetic for you once more.
Remember, if you have an oval shape, it is just a circle cut in half, so you can calculate square feet of the area up or down by doubling or halving based on the shape of your area.
Irregularly shaped area
Things get more complicated if the area you’re estimating has an irregular shape. Still, you’ll want to divide it into multiple regular-shaped pieces, calculate their volume and gravel requirements, and add them.
How much does a yard of gravel weigh?
Typical gravel weighs around 2830 pounds (1.42 tons) per cubic yard. A square yard of gravel weighing 157 pounds (74 kg) has a depth of 2 in (5 cm).
It is expected that the gravel is free of dirt and other debris.
How much does a cubic meter of gravel weigh?
Typical gravel weighs 1,680 kilograms (1.68 tons) per cubic meter. A square meter of gravel with a 5 cm depth weighs approximately 84 kg (0.084 tonnes). This gravel calculator was used to calculate the figures.
How much is a ton of gravel?
If the gravel has been screened for debris, a ton of gravel with average-sized pebbles is approximately 0.705 cubic yards or 19 cubic feet. It does not contain any remaining dirt, sand, or other materials.
Ton vs tonne, tons vs tonnes
Don’t confuse tonne and ton (short ton) when estimating gravel weight. The first is used by all countries and is defined as 1000 kg by the ISO. The US ton is equal to 2000 pounds (2000 lbs).
The difference isn’t tremendous, but it can add up as quantity increases when you order per ton for your driveway project. (Learn How Many Wheelbarrows In A Yard Of Concrete)
Is 2 inches Of Pea Gravel Enough?
Gravel is a naturally occurring material made up of water-born rock that can be found in buried or flowing streams.
Peas are spherical and smooth, but other characteristics depend on “parent rock.”
“Crushed gravel” is larger gravel crushed to a smaller size, and you’ll find gravel is sold with guaranteed maximum particle size, 10mm, 20mm.
Gravel density varies because of this; thus, consult the manufacturer’s technical requirements for the predicted density before using any gravel calculator.
Dry gravel density is 95 to 105 lbs./ft3. If blended with sand, its density is 1920 kg/m31].
Concrete often contains a crushed stone. It’s a good driveway base, paver patio sub-base, or general fill. Choosing the proper size and style is essential for any construction project, as some are more adaptable and have varied applications.
Construction gravel provides a strong base for construction and landscaping while landscaping gravel lasts longer than mulch or pine straw.
By knowing the gravel density you need, you may acquire a more precise estimate.
Gravel into two primary types by the Udden-Wentworth scale: granular gravel (2 to 4 mm) and pebble gravel (5 to 64 mm or 02 to 2.5 inches).
For small tasks, you can buy pea gravel in small bags. For larger projects, buy by the cubic yard or ton (cubic meter or tonne).
To purchase this amount to cover a large area, contact a landscaping provider and ask about shipping. Tools let you enter the price per ton to estimate a price for the number of tons you’d need to cover driveways leading to your home, for example.
If you are filling your driveway or another project area around your yard, you need to ensure your gravel is deep enough.
You don’t want a car weighing a couple of tons digging straight through two inches of driveway gravel into the ground underneath. Your project would be a waste and need more cost to fix.
You’ll find it better to use a mix of gravel on top with a good base layer of larger crushed rock that stops your gravel from sinking.
How Many Square Feet Does A Ton Of Pea Gravel Cover?
How much pea gravel do you need per square foot?
A cubic yard of pea gravel covers 324 square feet, or an 18-foot square, when dug at a depth of one inch.
To determine the area you can cover with a cubic yard of gravel, divide this area by the desired depth of gravel in inches.
How do I measure how much gravel I need?
- Measure the length and width of the area in feet and multiply the figures by each other.
- Multiply your area figure by the depth of your gravel you wish to use. Remember your measurement is also in feet.
- You now have a cubic feet volume figure.
How to calculate pea gravel volume and area?
Pea gravel calculator formula from measurements you provide. You can work out the cubic yards or area and volume of your required pea gravel using the formulae detailed here:
- Area = Length times Width
- Volume = Area times Depth
How much depth do I need for gravel?
A decent thick depth for bark or mulch would be 3 to 4 inches.
1 to 2 inches of gravel, depending on the size of the gravel, should be enough to cover an area. A calculator can help you work out how many bags of material would be at this depth. (Learn How To Arrange Lava Rocks On A Gas Fire Pit)
If you’re using 3/4-inch or larger gravel, figure on at least 2 inches of depth to ensure adequate coverage for the number of cubic yards you have to cover.