Here’s a little way to calculate the maximum number of rows you can work on a shawl (top down shawls only). You need to have knitted at least 20% of your yarn to do get an accurate answer, it will give you a result as long as you have used more than 10% though.
Odd Shaped shawl
This calculation will work for any shawl pattern that starts at the top and has a consistent rate of increases along the length. (ie. 8increases in 9 rows out of 30 = ( ( 8 * 9) /30 ) = 2.4sts per row)
(ie Teyla Shawl)
The yarn usage and stitches per row won’t be as exact for some patterns, Teyla for example increases every row for several rows, then not at all for several more. So the Stitches per Row and Maximum number of rows will only be truly accurate if they fall on a pattern repeat.
I could alter the script so that you enter the pattern repeat length and it only gives answers for full repeats, but it probably isn’t worth the effort. (Please comment if you think that would be more helpful.)
(Use my triangular shawl calculator for regular triangular shawls like Ishbel, Aeolian, Laminaria, Traveling woman, Gail, Dew Drops, Danish Ripple, etc)
You need to know:
I hope you find this page useful, I provide it free for everyone, please link to it here.
Contact me through Raverly, or email me if you have any questions.
P.s. Don’t blame me if the answer doesn’t work out for you, I provide this script working to the best of my knowledge, free to everyone.
(c) Bex Hopkins 2010, please do not attempt to steal this script.
If you would like to know how this is calculated please contact me.