In most cases, you can use the chart shown here to purchase an equivalent amount of fabric in a different width. For example: Let’s say the pattern you plan on making says that you need 2 yards of 60" wide fabric, but the fabric you want to use is only 32" wide. According to the chart, you would need to buy 3 3/4 yards of the 32" wide fabric.
A Few Pointers
Buying fabric when it is on sale or using a coupon from flyers that most fabric stores mail out, makes the fabric more affordable and allows for buying extra fabric. Follow tips to save money on sewing clothing and other textile needs. Be sure to sign up for all fabric store mailings, so you receive the best coupons and know when sales are taking place. There are many free patterns to make with scraps of fabric so your extra fabric will not go to waste.