Sand Calculator
Calculate how much sand you need for your construction, landscaping, or sandbox project. Enter the dimensions of your area, choose your preferred units, and get results in cubic yards, cubic meters, tons, and bags, all with a waste factor for accuracy.
What Is a Sand Calculator?
A sand calculator is a tool that helps you estimate the amount of sand needed for construction, landscaping, and sandbox projects. It calculates the volume and weight of sand required based on the dimensions of the area and the desired depth.
This calculator supports four shapes: Rectangle, Square, Circle, and Triangle, and provides results in cubic yards, cubic meters, tons, and the number of bags needed.
How Does the Sand Calculator Work?
The calculator uses the following formulas:
Area: Based on the selected shape
Rectangle: L × W | Square: s² | Circle: π × r² | Triangle: ½ × b × h
Volume: Area × Depth (converted to feet or meters)
Cubic Yards: Volume (ft³) ÷ 27
Cubic Meters: Volume (m³)
Weight (Tons): Volume (ft³) × Density (lb/ft³) ÷ 2000
A waste factor (default 10%) is applied to account for settling, spillage, and uneven ground. The calculator also estimates the number of bags needed based on your selected bag size.
Why Use This Sand Calculator?
- Four Shapes: Supports rectangle, square, circle, and triangle areas.
- Unit Flexibility: Switch between imperial (feet, inches) and metric (meters, centimeters).
- Weight & Bag Estimation: Get results in tons and the number of bags needed.
- Waste Factor & Cost: Add a waste factor and estimate total material cost.
- Free & Private: No registration, no data storage.
❓ Sand Calculator FAQ
How do I calculate how much sand I need?
Measure the length and width of the area, then decide how deep you want the sand. The calculator multiplies these to find the volume. For circular areas, measure the radius.
What is the formula for calculating sand volume?
Volume = Length × Width × Depth. Then convert to cubic yards by dividing by 27.
How many cubic feet are in a cubic yard of sand?
There are 27 cubic feet in one cubic yard.
How much does a cubic yard of sand weigh?
A cubic yard of dry sand weighs about 2,700 pounds or 1.35 tons. Wet sand weighs more — about 3,000 pounds or 1.5 tons.
What is the density of sand?
Dry sand density is about 100 lb/ft³ (1600 kg/m³). Wet sand is about 110 lb/ft³, and play sand is about 90 lb/ft³.
How deep should sand be for a sandbox?
For a sandbox, 4-6 inches of sand is typical. For a volleyball court, 12-18 inches is recommended.
What type of sand should I use for a sandbox?
Use play sand, which is specifically screened and washed for children's sandboxes. It's finer and safer than construction sand.
How many bags of sand are in a cubic yard?
One cubic yard is about 27 cubic feet, which is approximately 14-18 bags depending on bag size.
What is a waste factor and why is it important?
The waste factor accounts for settling, spillage, and uneven ground. A typical waste factor is 5-10% to ensure you don't run short.
How do I convert cubic yards to tons of sand?
Multiply cubic yards by the density in lb/ft³, then divide by 2000. The calculator does this for you.
How do I calculate sand for a circular area?
Use the Circle shape mode. Enter the radius of your circular area and the desired depth.
How do I calculate sand for a triangular area?
Use the Triangle shape mode. Enter the base and height of your triangular area and the desired depth.
Should I buy bagged or bulk sand?
Buy bags for small jobs (under 0.25 cubic yards). Choose bulk delivery for larger projects (1+ cubic yards) to save money.
How much sand do I need for a 10×10 patio base?
A 10×10 patio at 2 inches deep needs about 0.62 cubic yards of sand. With a 10% waste factor, about 0.68 cubic yards.
What is the difference between masonry sand and play sand?
Masonry sand is coarser and used for mortar and concrete. Play sand is finer, screened, and washed for children's sandboxes.
Can I use this calculator for a sand filter?
Yes, enter the dimensions of your filter bed and the desired sand depth. The calculator will give you the volume of sand needed.
How do I improve drainage with sand?
Mix sand into clay soil to improve drainage. Use coarse sand (not play sand) for better results.
What is the difference between dry and wet sand weight?
Wet sand weighs more because water fills the spaces between sand grains. Dry sand is about 100 lb/ft³, wet sand is about 110 lb/ft³.