I often get asked this question, how do I check my ring size at home if I can't meet you in person? Not a problem. Here'show.
1. Use an existing ring you own that fits you perfectly.Don't have one? No matter.
2. Surely you have some paper , a pen/pencil, scissors and a ruler lying around.
If you have a ring that already fits your finger well, you can use a ruler to measure the inside diameter of this ring. Just take your ruler and measure straight across the inside of the ring from edge to edge.
Reconfirm with the following steps / OR if you do not have an existing ring:
Cut a strip of paper approx 5mm thick x 10mm length. Wrap the paper around the base of the intended finger and then mark where the paper overlaps. The length of the paper you measured in millimeters is the circumference of your finger.
Note: If the size of your finger below the knuckle drastically differs in size from the knuckle itself, measure your knuckle as well and choose a size that falls more in the middle of these two measurements.
Bear in mind, our body (including our fingers) expand / shrink throughout the day depending on several factors. For instance, fingers are typically bigger in the morning when you are hot, or have recently consumed a lot of salt or alcohol.
They shrink when you are cold or swimming in cold water. They are bigger in the summer and smaller in the winter. Fingers can swell a lot when you sleep or fly.