The Stone Store

Products from the Earth

for Construction, Landscape & Decor

Open Mon~Fri: 7am-5pm,
Saturday: Closed until March 18, 2017

Project Planning and Estimating Tools

Calculating Circles

How to calculate the length around a circle

Formula: Diameter x 3.1416 = Linear Feet Around a Circle

Example: Length Around an 18 foot diameter round Swimming Pool

18 ft x 3.1416 = 56.55 ft (total linear feet around pool)

To add 2 feet of stone (3 inches deep) around this pool: 56.55 feet x 2 feet= 113.10 feet

113.10 feet x 0.25 (3 inch depth) = 28.28 Cubic Feet

28.28 / 27 = 1.05 Cubic Yards

How to calculate the square footage inside a circle

Formula: Length x Width x 0.7854 = Square Feet

Example: Square footage inside a 24 foot diameter round Swimming Pool

24 feet x 24 feet = 576 feet

576 feet x 0.7854 = 452.39 Square Feet (total inside pool)

To add 4 inches of sand evenly across pool:
452.39 feet x .33 (4 inches depth) = 149.29 Cubic Feet

149.29 / 27 = 5.53 Cubic Yards

To be safe, always round up. You would order 6 Cubic Yards of sand.

Driveway or Pad Coverage

How to calculate coverage for a standard driveway or pad

Example: Standard Driveway or Pad to be covered with Stone, 6 inches deep.

15 feet x 25 feet = 375 Square Feet

375 feet x 0.50 (6 inch depth) = 187.5 Cubic Feet

187.5 / 27 = 6.94 Cubic Yards (round up to 7 yards)

How to calculate coverage for an L-shaped driveway or pad

Example: L-Shaped Driveway or Pad to be covered with stone, 7 inches deep. The calculation is done in two sections.

18 feet x 40 feet = 720 Square Feet

10 feet x 40 feet = 400 Square Feet

400 feet + 720 feet = 1,120 Square Feet

1,120 x .58 (7 inch Depth) = 649.60 Cubic Feet

649.60 / 27 = 24.06 Cubic Yards

Calculate Depth

Depth Chart

  • 1 inch = 0.08 feet
  • 2 inches = 0.17 feet
  • 3 inches = 0.25 feet
  • 4 inches = 0.33 feet
  • 5 inches = 0.42 feet
  • 6 inches = 0.50 feet
  • 7 inches = 0.58 feet
  • 8 inches = 0.67 feet
  • 9 inches = 0.75 feet
  • 10 inches = 0.83 feet
  • 11 inches = 0.92 feet
  • 12 inches = 1.00 feet
  • 13 inches = 1.08 feet
  • 14 inches = 1.17 feet
  • 15 inches = 1.25 feet
  • 16 inches = 1.33 feet
  • 17 inches = 1.42 feet
  • 18 inches = 1.50 feet

General Quantity Formulas

Length x Width = Square Feet

Square Feet x Depth = Cubic Feet

Cubic Feet / 27 = Cubic Yards

Note: When figuring quantities, remember to:

  1. double-check your measurements
  2. allow for compaction (equals higher yield per CY)
  3. double-check your measurements
  4. allow for a waste factor
  5. always round up

Length Calculator

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Weight Calculator

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Volume Calculator

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Area Calculator

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Lumber Calculator

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Aggregate Calculator

Width (Feet)      
Length (Feet)    
Depth (Feet)    
Density (lbs/cubic yd)     3000
TONS NEEDED    

For estimating purposes only

  

These calculators are provided for estimating purposes only.
For exact calculations, please contact The Stone Store at 888-766-4242

UnitConversion.org - the ultimate unit conversion resource.

Aggregate Gradations



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