Thursday, June 9, 2011

Fabric Math

I am good at quilt math - I think it is one of those things.  Practice makes perfect and I have a LOT of practice.  The measurements below are not something I have stored in my head but can figure out pretty easily.  I found this compilation in the gigantic stack of paperwork I am constantly trying to get a grip on.


These numbers are based on a yard, not a meter but that means you can get a little bit more in Canada where you are buying 39 and a bit inches rather than 36!


Square Per Yard
1"
=
1584
5"
=
56
9"
=
16
1 1/2"
=
696
5 1/2"
=
48
9 1/2"
=
12
1 7/8"
=
437
5 7/8"
=
42
9 7/8"
=
12
2"
=
396
6"
=
42
10"
=
12
2 1/2"
=
238
6 1/2""
=
30
10 1/2"
=
12
2 7/8"
=
180
6 7/8""
=
30
10 7/8"
=
12
3"
=
168
7"
=
25
11"
=
12
3 1/2"
=
120
7 1/2"
=
20
11 1/2"
=
9
3 7/8"
=
99
7 7/8"
=
20
11 7/8"
=
9
4"
=
99
8"
=
20
12"
=
9
4 1/2"
=
72
8 1/2"
=
20
12 1/2"
=
9
4 7/8"
=
63
8 7/8"
=
16
12 7/8"
=
9

Squares per Fat Quarter (18"x 22")

2"
=
99
3 7/8"
=
20
5 1/2"
=
12
2 1/2"
=
56
4"
=
20
5 7/8"
=
9
2 7/8"
=
42
4 1/2"
=
16
6"
=
9
3"
=
42
4 7/8"
=
12
6 1/2"
=
6
3 1/2"
=
30
5""
=
12
6 7/8"
=
6

Diagonal Block Measurements
The basic calculation to find the size of square you need for setting triangles is to multiply the block size by 1.41

Finished Block SizeDiagonal Measurements Decimal Equivalents
4"5 5/8" 5.625"
6"8 1/2" 8.5"
9"12 3/4" 12.75"


Get a printable version of this information here.

Happy quilting.

:o)  Tina

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