We've moved to 3740 N. Josey Lane, Suite 102, Carrollton, TX 75007, Tel: 972-325-7232, Fax: 972-215-7333

Estimating yardage of a ball of yarn by weight

I was gifted a ball of yarn, but don't know the yardage. Is there a formula to calculate the yardage based on weight of ball and type (light worsted to worsted) of yarn?