When you don't know your ring size, it's a challenge to find jewelry that fits. If your ring is way too tight, getting it off your finger becomes a real struggle. If it's too big, the ring might slide off, so you're more likely to lose it. If you want a new ring but you're not up for a trip to the jeweler, size your finger at home with a piece of string and a ruler.

Step 1

Cut a 6-inch piece of light-colored, nonstretchy string such as yarn or twine.

Step 2

Wrap the string around the base of your finger, just below the knuckle.

Step 3

Use a pen to mark the string where the two ends overlap.

Step 4

Lay the string flat across a ruler with the pen mark on the right.

Step 5

Note the number on the ruler that's closest to the pen mark. This is your ring size in inches.

Step 6

Compare the size in inches to a ring-size chart (see Resources). For example, if you measured the string at 1.94 inches, your actual size would be 5.


  • For best results, measure when your hands are warm, not cold. Your fingers may shrink slightly if they're cold.

  • If you're buying a ring as a gift, try asking the recipient's friends or family about her ring size.

  • Size 6 is the average woman's ring size. Size 10 is the average ring size for a man.

  • If you don't have string, measure your finger with a piece of paper that's 6 inches long and about 1/4 inch wide.

  • If you do not have a ruler, you can print one on a sheet of paper (see Resources).

  • Ring sizes differ if you're not in the United States or Canada. Consult a ring-sizing comparison chart to find your size in another country such as Australia, Germany or France.