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Choosing the correct ring size helps ensure your new ring is comfortable to wear and reduces the need for returns or exchanges.
This guide explains how to measure your ring size at home, understand UK and international ring size conversions, and choose the right size for different ring styles, including adjustable and wider bands.
At Mistry Gems, we offer both fixed-size and adjustable sterling silver rings. If you're unsure which size to choose, this guide will help you find the best fit before placing your order.
There are several ways to find your ring size. For the most accurate fit, we recommend using a ring sizer or having your finger measured by a local jeweller.
Our official reusable UK & US ring sizers provide one of the most accurate ways to measure your finger at home. Simply slide the ring sizer onto your finger and adjust it until it feels comfortable. It should slide over your knuckle with slight resistance but should not feel tight.
If you already own a ring that fits the correct finger, measure the inside diameter and compare it with the UK & International Ring Size Conversion Chart below.
A – Measure the Internal Diameter
Using a ruler or digital callipers, measure the inside diameter of the ring (from one inside edge to the opposite inside edge) in millimetres.
For the most accurate result, measure as precisely as possible, as even 0.1 mm can affect the ring size.
B – Use a Ring Mandrel
A ring mandrel is an inexpensive jewellery measuring tool that can be purchased online.
Simply slide your existing ring onto the mandrel and read the size where the ring sits naturally.
Most jewellers will measure your finger free of charge using professional ring sizing tools. This is a good option if you're unsure of your size or are buying a wider band ring.
Wider rings naturally fit more snugly than narrow bands because they cover more of your finger. This means the same ring size can feel tighter in a wider band than it would in a slim band.
If you're purchasing one of our Spinner Rings or another wide band design (approximately 3 mm or wider), we may recommend choosing around ¼ to ½ size larger for the most comfortable fit, depending on the width of the ring and the shape of your finger.
If you're unsure which size to choose, please let us know your usual ring size before placing your order. We'll be happy to recommend the most suitable size for your chosen ring.
Use this chart to convert between UK, US and international ring sizes. If you're unsure, we're always happy to help before you place your order.
Choosing the correct ring size isn't just about measurements. Everyday factors can affect the fit of your ring, so keeping these simple tips in mind will help you achieve the most comfortable fit.
✔ Measure your finger at the end of the day when it is naturally at its largest.
✔ Avoid measuring when your hands are cold, as fingers can temporarily become smaller.
✔ Don't measure immediately after exercise, as your fingers may swell slightly.
✔ Measure your finger two or three times and compare the results for greater accuracy.
✔ Your dominant hand is often slightly larger than your non-dominant hand, so always measure the finger on which you intend to wear the ring.
✔ A correctly fitting ring should slide over your knuckle with gentle resistance. It should feel secure enough not to fall off, while remaining comfortable to remove.
Choosing a ring as a surprise doesn't have to be difficult.
If you're buying for someone else, here are a few helpful tips:
• Borrow a ring they already wear on the correct finger and measure its inside diameter.
• Ask a close friend or family member if they know the recipient's ring size.
• If you're unsure, it's usually better to choose a slightly larger size, as a ring that's too loose is generally easier to adjust than one that's too tight.
If you're still unsure about the correct size, feel free to contact us before placing your order. We're always happy to help.
How do I know if my ring fits correctly?
A ring should slide comfortably over your knuckle with gentle resistance. It should feel secure enough not to fall off, but still be easy to remove without causing discomfort.
What should I do if I'm between ring sizes?
If your measurement falls between two sizes, we generally recommend choosing the larger size for a more comfortable fit.
For wider band rings, such as spinner rings, a larger size is often the better option.
Do fingers change size during the day?
Yes. Fingers naturally expand and contract depending on temperature, activity and the time of day.
For the most accurate measurement, measure your finger in the evening when it is at its largest.
Should I size up for spinner rings?
Wide band rings, including many spinner rings, tend to fit more snugly than narrow bands.
Please refer to the individual product description for specific sizing advice, or contact us if you're unsure before placing your order.
Can sterling silver rings be resized?
Some sterling silver rings can be resized by a professional jeweller, while others cannot.
Factors such as the gemstone setting, ring design and band style all influence whether resizing is possible.
What if I order the wrong size?
We understand that choosing the correct ring size can sometimes be difficult.
Please refer to our Returns & Exchanges Policy or contact us if you need advice regarding your order.
Can I use a piece of string or paper to measure my finger?
While this method can provide a rough estimate, it is generally less accurate than using a reusable ring sizer or measuring an existing ring.
For the best results, we recommend using one of the methods described in this guide.
Does finger size change with the seasons?
Yes. Many people find their fingers are slightly larger during warmer weather and slightly smaller during colder months.
If your measurements are close to the next size, this is worth considering before placing your order.
Which finger should I measure?
Always measure the exact finger on which you intend to wear your new ring.
Remember that the fingers on your dominant hand are often slightly larger than those on your non-dominant hand.
Do ring sizes vary between countries?
Yes. Ring sizes differ between the UK, US, Europe and other countries, which is why we've included an international conversion chart. If you're ordering from outside the UK and need help converting your size, please get in touch before placing your order.
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If you have any questions about ring sizing, gemstone rings or choosing the perfect gift, please don't hesitate to get in touch. We're always happy to help and will do our very best to ensure you choose the correct size before placing your order.
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