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Calculating the Number of Hexagons for a Quilt

Calculate the number of hexagons required for a quilt. What you need to know is how big you want the quilt to be and what size hexagons you will be using.

The Variables

W = width of quilt

L = length of quilt

d = size of hexagon (finished)
(decimal, 1/4" hexagon is .25)

Provide Quilt Parameters
Quilt width: W = inch
Quilt length: L = inch
Hexagon size: d = inch
The numbers
# of columns:
# of rows:
# of hexagons:
# of half hexagons:
Actual size of quilt top
Width: inches
Length: inches


Figure 1

The Equations - Always round up to nearest whole number.

# columns = X =

W


d * 1.732
   

# rows = Y =

2L - d


3d
   

# hexagons =

L - 2d

(2X-1) + X


3d
     

# half hexagons =

2L - 4d


3d
   

Example (Double size quilt)

W = 80", L = 95", d = 1"

# columns = X =

W

=

80

= 47



d * 1.732 1 * 1.732
         

# rows = Y =

2L - d

=

2(95) - 1

= 63



3d 3(1)
         

# hexagons =

L - 2d

(2X-1) + X

=

95 - 2(1)

[2(47) - 1] + 47 = 2930



3d 3(1)
           

# half hexagons =

2L - 4d

=

2(95) - 4(1)

= 62



3d 3(1)
         

Actual Size of Quilt

W = Xd(1.732) = 47(1)(1.732) = 81.40"

 

L =

Y - 1

3d + 2d =

63 - 1

3(1) + 2(1) = 95"



2 2
         

Standard Quilt Sizes

 

Crib

Twin

Twin (Long)

Double (Full)

Queen

King

Mattress

27" x 52"

39" x 75"

39" x 80"

54" x 75"

60" x 80"

76" x 80"

Quilt
with Dust ruffle

30" x 54"

65" x 95"

65" x 100"

80" x 95"

86" x 100"

106" x 106"

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