This will do all the calculations for determining the correct
measurements for a pavilino (using canvas that is wide enough for a single wall
section), without having to struggle through the math. If you are
using narrow fabric, figure out the width you will be using (after you sew
pieces together) and use that calculated width. Click here for the Metric
Measurement canvas calculator.

You should only enter numbers in the green boxes and click
the "Compute Values" button. All
dimensions are in inches.

The dimensions calculated here do NOT include seam
allowance. Sewing flat fell seams the way I do it, you should allow
3/4" of seam allowance (on each side), which would reduce your
canvas width by 1 1/2".