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`v = f( "n" "-sides", "t" , "b" , "h" )`

Enter a value for all fields

The **Polygon Shaped Planter Volume** calculator computes the volume of soil needed for a polygon shaped planter based on its shape (number of sides) and dimensions including the length of the sides and the height (depth).

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

- (
**n**) Number of Polygon Sides - (
**t**) Length of Top Sides (see diagram) - (
**b**) Length of Bottom Sides (see diagram) - (
**h**) Depth of Material (e.g., potting mix) in Container.

**Planter Volume (V):** The calculator returns the volume in cubic feet. However, this can be automatically converted into other volume units via the pull-down menu next to the answer. The calculator also returns the equivalent volume in the number of soil bags of the following sizes:

- 1 ft
^{3} - 1.25 ft
^{3} - 2.5 ft
^{3} - 8 quarts
- 32 quarts
- 64 quarts

**IMPORTANT NOTE**: To compute the amount of soil needed in the planter, use the interior dimensions of the container, and use the top diameter associated with how high you want to fill the container. If you wish to fill to the brim, it is the full inner height.

This calculates the volume of a polygon shaped planter. Enter the dimensions of the planter including the number of sides (n), the length of one of the sides on the top (t) of the container, the length of one of the sides of the bottom (b) of the container and the (d) depth of the interior of the box (see diagram), then this formula will provide the volume of the container. This answers the following questions:

- How much soil will my polygon planter hold?
- How much water will my polygon container hold?
- How much potting soil do I need?

If you do not intend to fill the container to the top, this formula will over estimate unless you use a depth (d) that matches your expected top surface inside the container. Unless it's a very large container, and/or you are only using a small portion of the container, the overage should be small.

**Potting Mix** is combination of organic materials (e.g., peat moss, aged bark and pumice) but no soil (dirt) that is used in lieu of potting soil to improve drainage. Because potting mix has no soil, it tends to be lighter than potting soil and provides a more sterile medium for plants with fewer disease carrying agents. Potting mix is most commonly recommended for plants in containers, and potting mix is particularly desirable for starting seeds.

**Garden Soil** is a gardening product sold that contains natural soil (dirt) comprised of mixture of loam, clay and sand. Garden soil is often used in raised gardens or planters as a healthy and easy medium for plants and seeds on top of the natural soil in one's yard. Garden Soil differs from Potting Mix in that garden soil contains real soil (dirt), where Potting Mix does not.

Always use local pricing for the most accurate cost! However, vCalc conducts a periodic pricing survey from nationally advertised retailers for various materials. The current **Garden Soil Price Survey** sample information for Garden Soil and Potting Mix is as follows:

**Date**: 10/14/22**Store**: Menards**Garden Soil (1 ft**: $5.26^{3})**Garden Soil (1.5 ft**: $5.78^{3})**Garden Soil (2 ft**$7.56^{3}):**Potting Mix (1.25 ft**$4.43^{3}):**Potting Mix (2.5 ft**$8.89^{3}):

The Pricing Data can be used the the Raised Planter calculator. Note, this information is propagated into several pages in vCalc.

- Volume of a Box Planter - Rectangular with vertical sides
- Volume of a Tapered Rectangular Box - Rectangular with tapered sides
- Volume of a Tapered Polygon Shaped Planter - Polygon base and top with any number (n) of even sides
- Volume of a Triangular Shaped Planter (with vertical sides).
- Volume of a Hexagon Shaped Planter
- Volume of a Octagon Shaped Planter
- Planting Soil Cost - Estimate of cost of soil.
- Water Requirement to Prepare Soil
- Greenhouse Calculator
- Mulching and Landscaping Fabric Calculator
- Conversions to Common Kitchen Units: This takes any volume measurement (you choose the units) and converts it into house-hold kitchen units. For example, 0.9 ft
^{3}turns into 6 Gallons, 2 Quarts, 1 Pints, 1.5 Cups, 3 Tablespoons and 1.54 teaspoons.