Getting your ring size right is important. A ring that fits well is comfortable, stays put, and looks good.
This article focuses on ring sizing in the USA, because the United States, Canada, and parts of Mexico use a unique numbering system to indicate the inner circumference of rings.
It can be tricky to convert ring sizes from other countries, as the various sizing systems used worldwide can differ quite a bit. So, if you’re buying a ring in the US, or from a US-based retailer, it’s important to understand how the size of rings in USA are determined.
The US Ring Size System: A Comprehensive Overview
If you’re shopping for a ring in the United States, you’ll probably be using the numerical ring sizing system that’s standard here.
Standard US Ring Sizes
In the US system, ring sizes run from 1 to 16, and they also include half and quarter sizes so you can get a more exact fit. Tungsten and titanium are popular choices for rings, but you can find rings in all types of materials.
Key Measurements
The two most common measurements you’ll see are ring diameter, which is the measurement across the inner circle of the ring, and ring circumference, which is the measurement around the inner circle of the ring.
Ring size charts usually list the diameter and circumference in both millimeters and inches.
Where the US System is Used
The US ring sizing system is primarily used in the United States, although it’s also used in Canada and some jewelry stores in Mexico.
How to figure out your ring size
There are a few ways to determine your ring size, including a couple of DIY methods you can try at home. For the most accurate result, though, it’s best to get a professional measurement.
At-home measurement techniques
If you want to get a general idea of your ring size, you can try one of these methods:
- Using a ring sizer. You can order a plastic ring sizer online, sometimes free of charge, and use it to measure your finger.
- Printable ring size charts. Many charts include international sizes, so you can compare to other sizing systems. Just make sure you’re printing the chart to scale, so your measurements will be accurate.
- String, paper, and ruler method. Wrap a piece of string or paper around your finger, mark where the ends meet, and measure the length with a ruler. Then, compare the length to a ring size chart.
Professional measurement
The most precise way to determine your ring size is to visit a jeweler and have them measure your finger. They have specialized tools and expertise to ensure the most accurate fit.
Using an existing ring
If you have a ring that fits well, you can measure its inner diameter and compare the measurement to a ring size chart. This method can be helpful if you’re buying a ring for someone else and want to keep it a surprise.
Factors Affecting Ring Size
Turns out, finding the right ring size isn’t as simple as just measuring your finger once. Several factors can cause your finger size to fluctuate, leading to an ill-fitting ring. Here’s what to keep in mind:
Physiological Factors
- Temperature: Like a lot of things, fingers tend to swell when it’s warm.
- Time of day: Your fingers might be a different size in the morning than they are in the evening. It’s best to measure your finger at the end of the day when it’s likely to be at its largest.
- Hydration: Water retention can also lead to swelling in your fingers.
Lifestyle Factors
- Weight changes: A big shift in your weight, whether it’s a gain or a loss, can definitely affect your ring size.
- Exercise: You might notice your fingers swell temporarily when you exercise.
- Pregnancy: Swelling in the fingers and hands is a common symptom of pregnancy.
Other Considerations
- Dominant hand: The fingers on your dominant hand might be a little bigger than those on your non-dominant hand.
- Wider bands: If you’re planning on wearing a ring with a wider band, you might want to go up half a size for a more comfortable fit.
Ring Resizing and Exchange Policies
What happens if you get a ring and it doesn’t fit? The good news is that you have options.
Resizing Possibilities
In many cases, a jeweler can resize a ring to make it fit better. Keep in mind, though, that resizing can sometimes cause a minor change to the ring’s appearance.
Rings That Cannot Be Resized
Unfortunately, not all rings can be resized. Here are a few examples:
- Diamond eternity rings: These are tough to resize because of the continuous band of diamonds.
- Rings made of certain materials: Tungsten and some other super-hard metals are difficult, if not impossible, to resize.
- Rings with intricate designs: If your ring has milgrain or other fine detail work, resizing could alter the pattern.
Exchange Policies
A lot of jewelers will let you exchange a ring that doesn’t fit properly. There are usually time limits on exchanges (like 30 days, for example), and exchanges can sometimes affect the final price or the number of diamonds or gemstones in the ring.
US ring sizes and international conversions
If you’re buying a ring from overseas, you’ll need to know how US ring sizes translate to the ring sizing systems used in other countries.
Converting US to UK ring sizes
The most accurate way to convert ring sizes is to use a ring size conversion chart. Here are a couple of examples:
- US size 4 = UK size H
- US size 9 = UK size R
Other international systems
Many countries use different ring sizing systems, including European and Japanese sizing. If you’re buying rings made in other countries, be sure to use a conversion chart to ensure you order the correct size.
Key Takeaways
Getting your ring size right is key to comfort and enjoying the jewelry you choose. A ring that fits well will feel secure, not too tight or too loose.
There are several ways to figure out your ring size, from measuring at home with printable guides or string to getting a professional measurement from a jeweler.
Keep in mind that your finger size can change depending on the temperature, the time of day, and other factors.
When in doubt, the best approach is to visit a professional jeweler. They can give you an accurate measurement and answer any questions you have about ring sizing. That way, you’ll be confident that your ring will fit perfectly.