How much yarn?

[greyhoundgrandma]

I'm going to make the bearghan baby blanket with worsted weight yarn. It is made of 12" squares. I don't do squares much and realize the amount of yarn used depends on the square pattern. But can anyone give me a ballpark idea of how many ounces of yarn the "average" 12" square uses?

[wheat]

Worsted Weight has a fairly wide range so what you may want to do is make a small swatch using the same yarn in pattern. 

 

Using a 6 inch square,

 

Make it, then weight it with a postage scale.  

 

Multiple times 4 (it takes 4 six inch quare to make 1 twelve inch)

 

Multiple that by the number of blocks. 

 

Add 10-15% to each color and of course something for the edging.

[Becky Morgan]

Just as a rough estimate, most full-size worsted afghans I've made were 3 to 4 pounds. the ones made to cover beds were heavier, of course, and some babyghans were much lighter, but that's my "Do I have enough?" ballpark.