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`V = 2 (1 + sqrt(2)) * s^2 * d`

Enter a value for all fields

The **Volume of Sand in an Octagon Sandbox **calculator computes the number of standard bags (0.5 ft³) , the total volume and dry weight of sand to fill an octagon shaped sandbox based on the dimensions.

**INSTRUCTIONS**: Choose units and enter the following:

- (
**d**) Depth of sand in the sandbox - (
**s**) Inside Side Length

**Volume of Sand (V)**: The calculator returns:

- Number of bags of play sand
- Estimated price based on play sand price survey below
- Volume in cubic feet
- Dry weight of the play sand.

One should always use local pricing when available. Typically a bag of play sand is 1/2 a cubic foot, so twice the price will give you the local unit price for a cubic foot of play sand. However, for convenience, vCalc performs a periodic survey of commodities such as play sand. The most recent play sand survey was as follows:

**Store:**Lowes**Date:**10/12/21**Unit Price per Cubic Foot:**$8.66 USD/ft³**Unit Price per Bag**: $4.33 USD

- Compute the Amount of Sand needed for a Rectangular Sandbox
- Compute the Amount of Sand needed for a Circular Sandbox
- Compute the Amount of Sand needed for an Octagon Sandbox
- Compute the Number of .5 ft³ Bags of sand needed based on a volume
- Compute the Price of Sand needed for a sandbox
- Compute the Weight of Sand

If you've never had a sandbox before, there are few things to consider. First, sandboxes are a lot of fun and can keep your kids busy in a constructive way for long time. However, they will be covered with sand after playing. Also, unless your sandbox has a sun cover, your children will get a lot of sun. Consider generous application of Sun screen. Also, your sandbox should be porous with the ground. You don't want water to accumulate in the sand. Moist sand is fun to play with. Water saturated sand just gets you wet, and weighs a lot. Last, but not least, you will want to cover your sandbox at night. Animals, especially cats, may treat your sandbox as a latrine, and no one wants their children playing in that.