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Before ordering a ring, it is essential to find your ring size. In this guide I will go over:
  • different methods you can use to find your ring size
  • Tips and tricks for a perfect fitting
  • How to "secretly" find a ring size for a gift.  


No matter which method you use, keep in mind the following:

  • You should never be able to shake off your rings. 
  • You should feel a bit of resistance while passing the ring over your knuckles, but it should not be painful or overly difficult to take off. 
  • Don’t get sized right after exercising/long walks! Your fingers will be swollen.
  • Do get sized at the middle of the day. When you first wake up your fingers are the smallest and swell during the day
  • You should not expect to be the same size on both hands. The vast majority of people have slightly larger fingers on the hand they write with, so make sure you size for the exact finger you are looking to buy a ring for. 
  • I only recommend using the methods you see in the guide. You can find tutorials online that involve wrapping a string around your finger, or using print outs to determine your ring size, but I do not find these accurate and strongly recommend against them.
  • You can order quarter sizes. Standard USA sizing system comes in half size increments, but if you sense you are in between, you can request a quarter size (ie 6 1/4 or 6 3/4)
Different countries have different sizing systems, so take note of what regions’ system you get sized in and use the chart below to convert to USA sizes, which is used throughout my site. 


This is the go-to option if you are looking to obtain a ring size secretly. It does require a lot of precision, so take your time and double check.  You want to measure internal wall to internal wall, in mm. 


  • Use a ring that is narrow and has an even width all around the band. 
  • Pick a ruler that is flat and measure on a flat surface.
  • If your ring is falling off the edge of the ruler on 0, it may be best to use a different marker as your 0 point, like in the photo I am using the 10mm marker as my 0 point.
  • It is absolutely crucial you make sure your ring is perfectly round for this method. Thinner rings have the tendency to bend a bit out of shape after years of use and will give an inaccurate result. 
  • Rotate the ring and take various different measurements to make sure you are being accurate
  • Remember: 0.5mm difference is equivalent to half a size! So precision here is key
  • Use the ring sizing conversion chart below to convert to US sizes. 

    Alternatively, if you are not feeling up to the precision required in measuring with a ruler, you can take said ring to your local jeweller to get it sized. Request to have the internal diameter measured in mm along with local sizing unit. 

So, what to do if I want to gift a ring but there is no ring for me to measure?

Well, you are going to have to get creative on this one but I do have some ideas to share with you:

  • If you wear rings, you could order a ring sizer for "yourself" and try to subtly get them to try it for themselves. You could also enlist a best friend to help with this.
  • If you are looking to gift one of my designs that is made to order, I can provide you with a printable photograph of the piece that you can gift, so they can follow up with sizing.
  • If you are hoping to secretly commission a bespoke piece, we can work on the design together and you can gift a drawing of the design, and have them get sized afterwords.


Like shoes, there are many different systems used across the globe for sizing rings. I use US sizes throughout this website.
I recommend against using online charts to convert your ring size to US sizes. This is because international sizing systems does not match up with one another, making said charts all rounded and estimated. In fact, if you compare different charts you might find online, you will notice there are slight differences from one to another. 
Instead, if you know the internal diameter of the ring, use the chart below to convert directly to USA sizes, OR take note of the system you are using (UK, China, Swiss, ext) and send me an email or note at check out stating your size and in which system, and I will convert it using maths.