Free calculator · Layout & size

T-shirt quilt calculator

Enter how many shirts you have and the block size. You get a layout, the finished size and the interfacing to buy.

Number of shirts

Finished block size (inches)

Sashing width (0 for none)

Border width (0 for none)

Finished quilt68" × 84"

4 across by 5 down
Cut each shirt panel 14 1/2" square
Fusible interfacing (20" wide): 8 1/4 yd

How it is calculated

T-shirt knit stretches, so each panel is backed with lightweight fusible interfacing before it is cut to size. Cut the interfacing and the panel at the unfinished block size.

The calculator arranges the shirts in a grid a little taller than it is wide, which suits most beds and sofas.

Questions

What block size works for T-shirts?

12" to 15". Measure the largest design on your shirts and add at least 1" on every side.

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A finished star quilt folded over the arm of a chair

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