here is a chart i found at
curiousquilter.com on the numbers of postage stamp charms (in various sizes) needed for different size quilts. this will be very helpful to some.
And, looking ahead, this is how many charms you need to create different size quilts. Don’t panic, they go together faster than you may expect.
[TABLE="width: 639"]
[TR="bgcolor: transparent"]
[TH="bgcolor: transparent"]Charm Size[/TH]
[TH="bgcolor: transparent"]2.5 in.[/TH]
[TH="bgcolor: transparent"]2 in.[/TH]
[TH="bgcolor: transparent"]1.5 in.[/TH]
[TH="bgcolor: transparent"]1 in.[/TH]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]12×12″ (1 blk.)[/TD]
[TD="bgcolor: transparent"]36[/TD]
[TD="bgcolor: transparent"]64[/TD]
[TD="bgcolor: transparent"]144[/TD]
[TD="bgcolor: transparent"]576[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]48×60″ (20 blk.)[/TD]
[TD="bgcolor: transparent"]720[/TD]
[TD="bgcolor: transparent"]1,280[/TD]
[TD="bgcolor: transparent"]2,880[/TD]
[TD="bgcolor: transparent"]11,520[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]60×60″ (25 blk.)[/TD]
[TD="bgcolor: transparent"]900[/TD]
[TD="bgcolor: transparent"]1,600[/TD]
[TD="bgcolor: transparent"]3,600[/TD]
[TD="bgcolor: transparent"]14,400[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]72×90″ (45 blk.)[/TD]
[TD="bgcolor: transparent"]1,620[/TD]
[TD="bgcolor: transparent"]2,880[/TD]
[TD="bgcolor: transparent"]6,480[/TD]
[TD="bgcolor: transparent"]25,920[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]84×96″ (56 blk.)[/TD]
[TD="bgcolor: transparent"]2,016[/TD]
[TD="bgcolor: transparent"]3,584[/TD]
[TD="bgcolor: transparent"]8,064[/TD]
[TD="bgcolor: transparent"]26,496[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]96×108″ (72 blk.)[/TD]
[TD="bgcolor: transparent"]2,592[/TD]
[TD="bgcolor: transparent"]4,608[/TD]
[TD="bgcolor: transparent"]10,368[/TD]
[TD="bgcolor: transparent"]41,472[/TD]
[/TR]
[TR="bgcolor: transparent"]
[TD="bgcolor: transparent"]108×108″ (100 blk.)[/TD]
[TD="bgcolor: transparent"]3,600[/TD]
[TD="bgcolor: transparent"]6,400[/TD]
[TD="bgcolor: transparent"]14,400[/TD]
[TD="bgcolor: transparent"]57,600[/TD]
[/TR]
[/TABLE]