6 ways to decide the correct ring size you need
Would you like to buy a KLENOTA ring, but don’t know which size to order? There are two approaches to this – measure the size of an existing ring that fits or measure the size of the finger that will be wearing it.
First some basic geometry. Because rings are circles, there are two ways to describe their size – by measuring the distance all the way around the circle (circumference) or the distance across the widest part (diameter). Usually rings sizes quote the circumference measurement.
Every country seems to have its own way of measuring ring sizes. So scroll down to the conversion table at the bottom of this page if you want to translate between EU, US and UK ring sizes.
If you already have a ring that fits...
You can use an existing ring as a model for the new ring. Bear in mind that engagement rings must fit the third finger of the left hand – and this may be a different size from the third finger on the right hand.
1. How to measure the diameter of a model ring
Using a ruler, measure the ring’s diameter – from one inner edge to the other. Send us this measurement with your order. Or scroll down to the table below to convert this measurement to the official ring size (the circumference).
So if you measure her ring diameter at 17 mm (from inner edge to inner edge), this corresponds to a circumference of 53mm. So that’s an EU ring size of 53.
2. Measure the model ring with a jeweller's mandrel
A jeweller’s mandrel is a long aluminium stick that tapers gradually, with various scales etched along its length. It has four measuring scales - EU, US, UK, and inner diameter. You slip the existing ring on to the mandrel and see how far up the shaft it goes. Numbers up the side of the mandrel tell you what size the ring is.
3. Match the ring to the correct size on this print out
If you'd like to measure the ring size at home but you don't have a ruler and you don't want to visit a jewellery store, you can print out this guide from the International Gemological Institute (GIA) – and match the ring to relevant size.
If your ring sits just inside the circumference of the printed circle, you have found the right size. If not, try one size up or down.
Measure the size of the correct finger
If you don't have a model ring to go by, you'll have to measure the finger directly. Both of these methods will spoil the surprise if you're planning to buy the ring as a gift.. unless you hatch a plan to measure her finger while she's sleeping! You can try on various measuring rings, or measure around the finger with string or a strip of paper.
4. Using measuring rings
If the intended wearer of the ring can visit a jewellery store, there’s a really accurate way to determine ring size – using what looks like a big bunch of keys or optician’s lenses.You slip each measuring ring on the finger in turn to determine which is the best fit. The ring should fit snugly but loose enough to slide over the joint.
5. Using string or… dental floss… yes, that's dental floss
f you can’t get hold of measuring rings, wrap a length of string – or dental floss – tightly around the joint of the finger, and measure the length needed . This measurement gives you the inner circumference of the ring.
6. Measuring ring size using a strip of paper
If you don’t have string or floss to hand, another way is to cut a strip of paper and wrap that around the finger. But be careful to wrap the paper tightly – otherwise it’s easy to overestimate finger size and end up with a ring that slips off the finger.
Ring size conversion table
Women's ring sizes (standard size 50-60)
Men's ring sizes (standard sizes 58-67)