This simple at-home method only requires a piece of string, a ruler, and a few minutes of your time. It’s a handy way to estimate your ring size if you don’t have a ring sizer or chart nearby.

1- Start by wrapping the string around the base of your finger, exactly where you’d wear the ring. Make sure it’s snug but not too tight. You want it to mimic the feel of a real ring.

2- Next, use a thin marker to mark the point where the string overlaps.

3- Lay the string flat against a ruler and measure the length in millimeters from the starting end to the mark you made.

4- Then, compare that number to a ring size chart to find the size that matches your finger’s circumference most closely.

Tip: Try this at the end of the day when your fingers are naturally a bit more swollen. That way, you won’t risk choosing a size that feels tight later on.

1- Print the ring sizer guide: Download and print the ring sizer on standard US letter-size paper (8.5” x 11”) at 100% scale. Ensure that the printed guide matches a ruler for accuracy.

2- Cut out the measuring tape: Carefully cut along the outline of the measuring tape provided in the guide. Make a slit on the dotted line as indicated.

3- Wrap around your finger: Insert the numbered end of the tape through the slit to form a loop. Place it around the base of your finger, ensuring the numbers are facing outward.

4- Determine your size: Pull the tape snugly around your finger without causing discomfort. The number that aligns with the edge of the slit indicates your ring size.

If you already have a ring that fits the intended finger well, you can use it to determine the size, no measuring tape is required.

Download a printable ring size chart featuring actual-size circles labeled with U.S. ring sizes. Place your ring directly on top of each circle until you find the one where the inner edge of the ring lines up exactly with the outer line of the circle. If the ring falls between two sizes, it's best to size up slightly for comfort.

If you already have a ring that fits the intended finger well, you can use it to determine the size, no measuring tape is required.

Download a printable ring size chart featuring actual-size circles labeled with U.S. ring sizes. Place your ring directly on top of each circle until you find the one where the inner edge of the ring lines up exactly with the outer line of the circle. If the ring falls between two sizes, it's best to size up slightly for comfort.

If you want a more accurate measurement, a plastic adjustable ring sizer is a convenient tool. It works just like a belt. This tool is inexpensive, reusable, and easy to order online. They're especially helpful if you're between sizes or buying rings often. Here’s the correct way to use it:

1- Insert the pointed end through the buckle to form a loop.

2- Slip the loop onto your finger and tighten it gradually until it feels snug but comfortable.

3- Make sure it slides over your knuckle with slight resistance but doesn’t feel tight once in place.

4- Read the number on the sizer where it meets the buckle. That’s your ring size.