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Project Calculators

New Patio & Walkway Project

Replacing Grass or Dirt

Concrete Overlay

Without Expanding Project Size

Concrete Overlay

With Expanding Project Size

Natural Flagstone

Different Thickness Stones

Free Standing Walls

Free Standing and Built on Patios and Walkways, Short Sitting Walls, Pillars, Benches and Grills

Athletic Courts

Basketball, Tennis, Pickleball, Bocci Ball and More

Artificial Turf & Putting Greens

Replacing Grass or Dirt

Length x Width = Total Sq. Ft.

150 Sq Ft Project Area Example

Calculations Step-by-Step

Instructions and formula for calculating project area, materials along with helpful items checklist

Step 1: Calculate Project Square Feet

The paving stone you select may modify the size of your project

(Example project below based on 150 sq. ft. area)

Length 10
Width 15
Project Sq. Ft. (Length x Width) 150

How Many Pieces Do I Need To Buy?

Step 2: PaverBase Panels

Equals 4″ of compacted base (replaces bag base)

(Project sq. ft. ÷ sq. ft. of panel = total number of panels – see example below)

Project Sq. Ft. Sq. Ft. Panel # Panels
Lowe’s & Menards Panel 150 divided by (÷) 6 equals (=) 25
Home Depot Panel 150 divided by (÷) 5 equals (=) 30

Step 3: All Purpose Sand*

*Also called leveling sand, paver sand and step-2 sand

Only need 1/2″ with panels – max sand you can use is 1″ sand

(Project sq. ft. ÷ cu. ft. of sand = total number of bags – see example below)

Different Names of Sand by Region Project Sq. Ft. 1/2 Cu. Ft. # Bags (for 1/2″ of sand)
*Leveling Sand, Paver Sand, All Purpose Sand & Step 2 Sand 150 divided by (÷) 12 equals (=) 12.5
Project Sq. Ft. 3/4 Cu. Ft. # Bags (for 3/4″ of sand)
150 divided by (÷) 9 equals (=) 16.7
Project Sq. Ft. 1″ Cu. Ft. (Max) # Bags (for 1″ of sand)
150 divided by (÷) 6 equals (=) 25.0

Important Note: Never use play sand. Must use fabric to hold in sand.

  • TIM’S TIP:

    Lay extra fabric on the sides and low end of your project area. After laying your stones, fold the fabric up and then place the edge restraints. This will ensure sand will not leech out in time.

Step 4: Landscape Fabric

Use 20 yr to 30 yr or lifetime warranty type, only purpose is to hold in the sand

(Project sq. ft. ÷ size of fabric roll = total amount of rolls – see example below)

Project Sq. Ft. Size of Fabric Roll # Rolls
150 150 1

Step 5: Patio Stones, Pavers, Flagstones, Porcelain Tiles, Athletic Courts, Rubber, Turf

Select Paving Stone Size (All Sizes Are Nominal)

(Project sq. ft. ÷ stones sq. ft. = total number of paving stones – see example below)

Calculate How Many – “Patio Stones”
Project Sq. Ft. Stones Sq. Ft. # Paving Stones 5% additional for Breakage
150 divided by (÷) 1.78 equals (=) 84.3 88.5
Calculate How Many – “Pavers”
Project Sq. Ft. Stones Sq. Ft. # Paving Stones 5% additional for Breakage
150 multiplied by (x) 4.5 equals (=) 675 708.8

Paving Stone Size not listed?

Calculate Paving Stone Sq. In. & Sq. Ft.
Stone Length Stone Width Total Sq. In. Sq. Ft.
24 multiplied by (x) 36 equals (=) 864 or equals (=) 6

*Note: Calculation is estimated

Patio Stone and Paver Calculator

Patio Stone Sizes* Sq. Ft. Per Stone* Patio Stone Sizes* Sq. Ft. Per Stone* “Paver” Sizes* # Pavers Per Sq. Ft.*
Squares Approx Rectangles Approx Nominal Approx
10 x 10 .69 6 x 8 .31 3 x 6 7.93
11 x 11 .84 6 x 18 .75 4 x 7 4.5
12 x 12 .97 7 x 11 .39 4 x 8 4.5
14 x 14 1.32 10 x 15 1.22 5 x 8 3.2
16 x 16 1.78 11 x 13 1.0 5 x 10 1.94
18 x 18 2.18 11 x 15 1.0 6 x 6 4.0
20 x 20 2.78 12 x 15 1.3 6 x 9 2.7
24 x 24 3.26 12 x 18 1.0 7 x 7 .33
36 x 36 8.99 15 x 18 1.5 7 x 14 1.89
15 x 21 1.0 8.5 x 8.5 2.65
Sandstone 1.78 16 x 21 1.0 8 x 12 .67
16 x 24 2.58 9 x 12 .75
24 x 36 6.0 14 x 21 2.04

*Note: Calculation is estimated

Step 6: Edgers and Walls

Select stone width/size below*

(Project length ÷ unit or linear. ft. = total number of edgers or walls – see example below)

Calculate How Many – “Edgers” & “Walls”
Project Length Unit or Linear Ft. # Edgers or Walls
25 divided by (÷) 1.33 equals (=) 18.8
For Walls
# Wall Units # Courses High Total Wall Units
19 multiplied by (x) 4 equals (=) 76
Edger/ Wall Width Linear Ft. (Nominal)
6 .5
8 .67
9 .75
10 .83
11 .91
12 metric/inch .97 or 1.0
16 1.33
17 1.42
18 1.50
24 2.00

*Note: All sizes are nominal

Step 7: Edge Restraints and Spikes

For unsupported sides – There are 2 edge restraint sizes: 6′ or 8′

Project Linear Ft. Edge Restraint Length # Edge Restraints
35 divided by (÷) 6 equals (=) 5.8
# Of Edge Restraints # Spikes Per Edge Restraint # Spikes
5.8 multiplied (x) 6 equals (=) 35

*Note: Calculation is estimated

Other products you may need:

Gloves
Safety Glasses
Tape Measuer
Wooden or Metal Stakes
Nylon String
String Level
Carpenter Level
Rubber Mallet
Wheel Barrow
Shovel
Metal Rake
Hand Tamper

Broom
Plate Compactor (Large Jobs)
2 1/2″ Rebar Pipes
2 x 4 x 6 Screed board
Masonry Saw (if need to cut stones)
Masonry Chisel (To split retaining walls)
Small Sledge
Spray paint – to mark project area