# of blocks need to do a quilt
#22
Banned
Join Date: Dec 2009
Location: Enid, OK
Posts: 8,273
#23
Member
Join Date: May 2013
Posts: 1
Mattress size
Are these measurements for the top of the mattress only . What if you want the quilt to be 15" over each side? I'm new to this so I want to make as few mistakes as possible.
It might help if I gave you the info-huh. If you don't understand how it copied, email me and I'll redo it so you can understand it.
Twin Size
Quilt Full Size Quilt Queen Size Quilt King Size Quilt
Block Size Total Blocks
12" 54
15" 35
16" 35
18" 24
Block Size Total Blocks
12" 72
15" 42
16" 42
18" 30
Block Size Total Blocks
12" 72
15" 42
16" 42
18" 30
Block Size Total Blocks
12" 90
15" 56
16" 49
18" 36
Twin Size
Quilt Full Size Quilt Queen Size Quilt King Size Quilt
Block Size Total Blocks
12" 54
15" 35
16" 35
18" 24
Block Size Total Blocks
12" 72
15" 42
16" 42
18" 30
Block Size Total Blocks
12" 72
15" 42
16" 42
18" 30
Block Size Total Blocks
12" 90
15" 56
16" 49
18" 36
#24
Junior Member
Join Date: Mar 2011
Posts: 217
In my humble opinion, calculating the number of blocks you need is easy. 1. You need to know how big you want your quilt to be (your mattress size plus the drop on all sides). 2. Then you need to know your finished block size. 3. Then divide the width of the desired quilt by the block size and divide the length of the desired quilt by the block size. 4. Multiply the answers you got in 3.
Example: I want to make a crib quilt that is 48 inches by 56 inches. My blocks are 8 inches square, finished size. 48/8=6. 56/8=7. 6x7=42. So I need to make 42 blocks, if there are no borders.
Example 2: I want to make the same quilt, but with 4 inch borders on all sides. So the actual blocks sewn together will be 40 inches by 48 inches. 40/8=5, 48/8=6 and finally 5x6=30. I would need to make 30 blocks, and sew 6 rows of 5.
You don't need to buy books or information sheets. You just need to know what dimensions you want your quilt to be, and what the FINISHED size of your block is.
Example: I want to make a crib quilt that is 48 inches by 56 inches. My blocks are 8 inches square, finished size. 48/8=6. 56/8=7. 6x7=42. So I need to make 42 blocks, if there are no borders.
Example 2: I want to make the same quilt, but with 4 inch borders on all sides. So the actual blocks sewn together will be 40 inches by 48 inches. 40/8=5, 48/8=6 and finally 5x6=30. I would need to make 30 blocks, and sew 6 rows of 5.
You don't need to buy books or information sheets. You just need to know what dimensions you want your quilt to be, and what the FINISHED size of your block is.
#27
Power Poster
Join Date: May 2008
Location: MN
Posts: 24,659
I do start out with a guesstimate, though.
Example:
Queen size mattress top: 60 x 80
Drop on both sides and bottom: (60 + 15 + 15 ) and (80 + 15) - which ends up being about 90 x 95
Then I start deciding how to 'make it work'
I usually prefer having the set be odd x odd or even x even. Especially if using alternate blocks. Sometimes it doesn't matter.
#29
Member
Join Date: Jan 2015
Location: sanford florida
Posts: 12
I am sewing about six month. Would like to make large block queen size quilt. I have been reading about the nine square rearranged. .can I use nine ten inch blocks ,( when cut would be 5 inch) would that formular fit o.k I want to use suttle change in color( batisk what amout of each color would be good.thanks lori
Last edited by Lorisplace; 02-10-2015 at 06:45 PM. Reason: spell
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