Ring sizer tool online
Find your perfect ring size with our free online ring size calculator. Get accurate measurements instantly and ensure a comfortable, perfect fit!
Ring Size Calculator
Place your ring on the circle and use the slider to move it left or right until the ring’s inner diameter aligns with the circle. Your ring size will then be displayed.
US Ring Size: N/A
Diameter: 14.0 mm
Ring Size Chart
| Diameter (mm) | US | UK | EU | JP |
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How to Measure Ring Size?
You can easily measure your ring size online on your mobile using the following steps.
- Visit ring sizer tool online and open the ring size calculator.
- Place your mobile on a stable surface.
- Center your ring over the circle displayed on the screen.
- Adjust the circle using the slider until it matches the ring’s inner diameter exactly.
- Your ring size displayed on-screen and compare it with the provided ring size chart (US, UK, EU).
Calculate ring size with a ring sizer tool online
We’ve created a ring sizer tool online for the easiest and most accurate way to measure your ring size, and no extra equipment is needed. You can check your ring size anywhere, whether at home, work, or on the go, with just an internet connection. Simply visit our Ring Size Calculator on your mobile, tablet, or laptop and follow the visual guide to determine your perfect ring size. It’s quick, effortless, and ensures a precise fit for your rings!
International Ring Size Conversions
One of the most confusing aspects of buying rings online is the variation in sizing systems globally. If you are in the US buying from a UK brand, or in Europe buying from an Asian vendor, you need to understand the conversion.
1: The US & Canada System
This system relies on numerical values (e.g., Size 6, 7, 8). It uses half and quarter sizes.
- Basis: The scale is numerical.
- Common sizes: Women typically range from 5 to 7; men typically range from 9 to 11.
2: The UK, Australia & New Zealand System
This system uses an alphabetical scale (e.g., Size L, M, N).
- Basis: Each letter represents a specific increase in diameter.
- Nuance: Half sizes are represented as “Letter + 1/2” (e.g., M 1/2).
3: The European (EU) / ISO System
This is arguably the most logical system as it is based directly on the inner circumference of the ring in millimeters.
- Basis: A size “52” simply means the ring has an inner circumference of 52mm.
- Conversion Tip: If you know your finger’s circumference in millimeters, you instantly know your EU size.
4: The Japanese (JP) System
Similar to the US system, this uses numbers, but they do not correlate directly to US sizes. A US Size 5 is roughly a JP Size 9. Always use our comparison chart above to verify.
Average Ring Size for Women
If you are buying a ring as a surprise gift or an engagement ring, you might not have access to the recipient’s finger. In these cases, knowing the statistical averages can help you make an educated guess.
The Global Averages
While every person is unique, data from millions of ring purchases allows us to identify clear trends:
- United States & Canada: The average women’s ring size is between Size 6 and Size 7.
- United Kingdom & Australia: The average falls between Size L and Size N.
- Europe: The average is typically Size 52 to 54.
How to Estimate Based on Body Type?
While not a perfect science, there is often a correlation between overall body frame and finger size.
- Petite / Small Frame: If the woman is shorter than 5’4″ (162cm) or has a very slender build, her ring size is likely between Size 4 and 5.5.
- Average Height / Frame: For women of average height (5’4″ to 5’7″), the standard Size 6 to 7 is usually the safest bet.
- Tall / Larger Frame: Women who are taller or have a more athletic build often have slightly larger hands, typically wearing a Size 7.5 to 9.
Average Ring Size for Men
Men’s ring sizes are often harder to estimate than women’s because men typically have larger knuckles relative to the base of their fingers. This means a ring must be large enough to pass the knuckle, even if the base of the finger is thinner.
The Global Averages
- United States & Canada: The most common ring size for men is between Size 9 and Size 10.5. The absolute most common size is Size 10.
- United Kingdom & Australia: The average falls between Size S and Size U.
- Europe: The average is typically Size 60 to 63.
Estimating Men’s Sizes by Build
- Slender Build: Men with thinner fingers or a lighter build typically wear a Size 8 to 9.
- Average Build: Most men fall into the Size 9 to 10.5 range.
- Heavy Build / Broad Hands: Men with larger hands or thicker fingers often require a Size 11 to 13.
The “Wide Band” Factor for Men
It is important to note that men’s wedding bands are often wider (6mm to 8mm) than women’s rings. Wide rings feel tighter because they cover more surface area on the finger. If you are buying a wide band for a man, it is standard practice to add 0.5 to the size. For example, if he measures a Size 10 on a thin sizing gauge, order a Size 10.5 for a wide band.
Note: Please set your screen size to 100% before checking the size. If you encounter any issues, feel free to contact us. We are always here to help you!
Frequently Asked Questions (FAQ)
Yes, significant weight changes often affect ring size. Fingers store fat just like the rest of the body. A weight loss of 15-20 lbs (7-9 kg) can typically reduce your ring size by half a size or more. Conversely, weight gain, pregnancy, and high-sodium diets can cause fingers to swell, increasing your ring size temporarily or permanently. We recommend re-measuring your size if your weight has fluctuated significantly since your last measurement.
This is a crucial distinction for sizing.
Standard Fit: The inside of the ring is flat against your finger. It grips the skin more tightly.
Comfort Fit: The inside of the ring is domed (curved). Because less metal touches your skin, it slides over the knuckle easier and feels looser.
Sizing Tip: If you are buying a Comfort Fit ring, many jewelers recommend ordering a half size smaller than your standard measurement, as they tend to run slightly large.
it is better to be slightly loose than too tight, but there is a balance. A ring is a good fit if it slides on easily but requires a little “wiggle” and resistance to come off over the knuckle. If it comes off without any resistance, it is too big and you risk losing it in cold weather or when washing your hands. If your finger turns red or tingles, it is too tight.
No, they are rarely the same. Your dominant hand (the one you write with) is typically 0.5 to 1 full size larger than your non-dominant hand. This is because the muscles in your dominant hand are more developed and used more frequently. Important: If you are buying an engagement ring (traditionally worn on the left hand), do not measure a ring worn on the right hand, as it will likely be too big.
There is a limit. Generally, a ring can only be resized up or down by 2 sizes safely.
Going beyond 2 sizes: If you try to stretch a ring from a Size 5 to a Size 9, the metal will become dangerously thin and may crack. If you compress it too much, the curve of the setting will change, causing diamonds or gemstones to pop out.