Originally Posted by Jo M

Not sure where I came across this spreadsheet, but I find it comes in handy. I know you only asked about baby quilt size, but I included the rest for anyone who might find it helpful.

Quilt Sizes
[TABLE]
[TR]
[TD]Baby Quilt [/TD]
[TD]36" x 54" [/TD]
[/TR]
[TR]
[TD]Afghan/Lap Size [/TD]
[TD]54" x 72" [/TD]
[/TR]
[TR]
[TD]Twin Quilt [/TD]
[TD]54" x 90" [/TD]
[/TR]
[TR]
[TD]Double Quilt [/TD]
[TD]72" x 90" [/TD]
[/TR]
[TR]
[TD]Queen Quilt [/TD]
[TD]90" x 108" [/TD]
[/TR]
[TR]
[TD]King Quilt [/TD]
[TD]108" x 108"[/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[/TR]
[/TABLE]

Standard Batting Sizes
To choose the proper batting size, add 4" to the size of your
quilt top and pick that or the next higher batting size.
[TABLE]
[TR]
[TD]Crib Quilt [/TD]
[TD]45" x 60" [/TD]
[/TR]
[TR]
[TD]Twin Quilt [/TD]
[TD]72" x 90" [/TD]
[/TR]
[TR]
[TD]Double Quilt [/TD]
[TD]81" x 96" [/TD]
[/TR]
[TR]
[TD]Queen Quilt [/TD]
[TD]90" x 108" [/TD]
[/TR]
[TR]
[TD]King Quilt [/TD]
[TD]120" x 120"[/TD]
[/TR]
[/TABLE]

Standard Mattress Sizes
[TABLE]
[TR]
[TD]Crib Quilt [/TD]
[TD]27" x 50" [/TD]
[/TR]
[TR]
[TD]Twin Quilt [/TD]
[TD]39" x 75" [/TD]
[/TR]
[TR]
[TD]Double Quilt [/TD]
[TD]54" x 75" [/TD]
[/TR]
[TR]
[TD]Queen Quilt [/TD]
[TD]60" x 80" [/TD]
[/TR]
[TR]
[TD]King Quilt [/TD]
[TD]72" x 84" [/TD]
[/TR]
[/TABLE]

Number of Squares from a Fat Quarter
1 Fat quarter (18" x 22") =
[TABLE]
[TR]
[TD]99 [/TD]
[TD]2" squares[/TD]
[/TR]
[TR]
[TD]56 [/TD]
[TD]2 1/2" squares[/TD]
[/TR]
[TR]
[TD]42 [/TD]
[TD] 3" squares [/TD]
[/TR]
[TR]
[TD]30 [/TD]
[TD] 3 1/2" squares [/TD]
[/TR]
[TR]
[TD]20 [/TD]
[TD] 4" squares [/TD]
[/TR]
[TR]
[TD]16 [/TD]
[TD] 4 1/2" squares [/TD]
[/TR]
[TR]
[TD]12 [/TD]
[TD] 5" squares [/TD]
[/TR]
[TR]
[TD]12 [/TD]
[TD] 5 1/2" squares [/TD]
[/TR]
[TR]
[TD]9 [/TD]
[TD] 6" squares [/TD]
[/TR]
[TR]
[TD]6 [/TD]
[TD] 6 1/2" squares [/TD]
[/TR]
[/TABLE]


Yardage Chart
The numbers are based on 44" wide fabric. This should help you estimate the amount of fabric you will need for whatever number or size blocks you choose to make. The approximate number of patches you will get from this amount of fabric


[TABLE="width: 282"]
[TR]
[TD]Patch Size[/TD]
[TD]1 yd[/TD]
[TD]1/2 Yd.[/TD]
[TD]1/4 Yd.[/TD]
[/TR]
[TR]
[TD]2"[/TD]
[TD]357[/TD]
[TD]178[/TD]
[TD]89[/TD]
[/TR]
[TR]
[TD]2-1/2"[/TD]
[TD]208[/TD]
[TD]104[/TD]
[TD]52[/TD]
[/TR]
[TR]
[TD]3"[/TD]
[TD]154[/TD]
[TD]77[/TD]
[TD]38[/TD]
[/TR]
[TR]
[TD]3-1/2"[/TD]
[TD]108[/TD]
[TD]54[/TD]
[TD]27[/TD]
[/TR]
[TR]
[TD]4"[/TD]
[TD]80[/TD]
[TD]40[/TD]
[TD]20[/TD]
[/TR]
[TR]
[TD]4-1/2"[/TD]
[TD]63[/TD]
[TD]31[/TD]
[TD]15[/TD]
[/TR]
[TR]
[TD]5"[/TD]
[TD]56[/TD]
[TD]28[/TD]
[TD]14[/TD]
[/TR]
[TR]
[TD]5-1/2"[/TD]
[TD]42[/TD]
[TD]21[/TD]
[TD]10[/TD]
[/TR]
[TR]
[TD]6"&6-1/2"[/TD]
[TD]30[/TD]
[TD]15[/TD]
[TD]7[/TD]
[/TR]
[TR]
[TD]7"[/TD]
[TD]25[/TD]
[TD]12[/TD]
[TD]6[/TD]
[/TR]
[TR]
[TD]7-1/2"&8"[/TD]
[TD]20[/TD]
[TD]10[/TD]
[TD]5[/TD]
[/TR]
[TR]
[TD]8-1/2"[/TD]
[TD]16[/TD]
[TD]8[/TD]
[TD]4[/TD]
[/TR]
[TR]
[TD]9" to10-1/2"[/TD]
[TD]11[/TD]
[TD]5[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD]11"[/TD]
[TD]8[/TD]
[TD]4[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD]11-1/2" to12-1/2"[/TD]
[TD]5[/TD]
[TD]2[/TD]
[TD]0[/TD]
[/TR]
[/TABLE]

The approximate number of strips you will get from this amount of fabric
[TABLE]
[TR]
[TD]Strip Size[/TD]
[TD]1 Yd.[/TD]
[TD]1/2 Yd.[/TD]
[/TR]
[TR]
[TD]1-1/2"[/TD]
[TD]23[/TD]
[TD]11[/TD]
[/TR]
[TR]
[TD]2"[/TD]
[TD]17[/TD]
[TD]8[/TD]
[/TR]
[TR]
[TD]2-1/2"[/TD]
[TD]13[/TD]
[TD]7[/TD]
[/TR]
[TR]
[TD]3"[/TD]
[TD]11[/TD]
[TD]5[/TD]
[/TR]
[TR]
[TD]3-1/2"[/TD]
[TD]10[/TD]
[TD]5[/TD]
[/TR]
[TR]
[TD]4"[/TD]
[TD]8[/TD]
[TD]4[/TD]
[/TR]
[TR]
[TD]4-1/2"[/TD]
[TD]7[/TD]
[TD]3[/TD]
[/TR]
[TR]
[TD]5"[/TD]
[TD]7[/TD]
[TD]3[/TD]
[/TR]
[TR]
[TD]5-1/2"[/TD]
[TD]6[/TD]
[TD]3[/TD]
[/TR]
[TR]
[TD]6"[/TD]
[TD]5[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD]7"[/TD]
[TD]5[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD]8"[/TD]
[TD]4[/TD]
[TD]2[/TD]
[/TR]
[/TABLE]