Determining how much yarn to order.

March 10, 2008 at 11:50 am Leave a comment

Dear SweaterBabe,

I have found some bulky yarn on sale. The yarn skein contains 57.5 yards, needle size is 10-11 and 3.75 sts over 4″. My vest pattern that I want to knit is for a needle size 13 and 2.5 sts over 4″. I need 400 yards for my vest.

My question is there a mathematical formula that I can use to determine how much yarn to order. Scared that I will not order enough and since this yarn is online I cannot knit a swatch.

— Connie

Dear Connie,

You actually can easily detemine how much yarn to order since all you need is the yardage.

Your vest requires 400 yards and the sale yarn comes in 57.5 yard balls.  Therefore, 400 / 57.5 = 7 balls.  I might order 8 just to be safe.

However, what I’m wondering is if your question means that you will be doing any changes to the pattern.  A pattern that has a gauge of 2.5 sts = 1″ (I think you meant 1″, not 4″) seems like a Super Bulky yarn vs. the sale yarn, which is Bulky yarn with a gauge of 4 sts = 1″ (I think you meant 1″, not 4″ here as well).  I would actually be concerned that the yarn you are substituting may not be thick enough.

The only way to really test it will be to order it, do the gauge swatch, and measure it.

Best of luck and I hope I’ve answered your question!

— SweaterBabe

If you have a knitting or crochet question for SweaterBabe, please email it to  Please do NOT post it as a comment here.  Not all questions can be answered due to the large volume of questions, but many are selected and answered each month here on the Blog and in the newsletters.  Thanks!


Entry filed under: Ask SweaterBabe, Knitting Questions and How to.

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