The first step in finding your dream ring is finding your ring size. Designed to accurately measure the size of your finger, this plastic tool should be looped around the finger so that the end can be pulled until the ring is snug. The correct ring size should also be able to move over your knuckle, but it is normal for the ring to feel tight when doing so. Look for the little black arrow to determine the ring size. Our size finder will show full, half and quarter sizes, and ship to you within 48 hours.