Choosing the correct ring size is essential for comfort, durability, and daily usability especially when you’re investing in a functional ring like the TNG NFC Ring
A ring that fits perfectly ensures smooth daily use for:
Public transport (MRT, LRT, Monorail Komuter)
Parking & access systems
Toll
In this guide, we’ll show you how to measure your ring size accurately and convert it to US ring size, the most commonly used standard for custom and smart rings.
US ring sizing is widely used for:
Online ring purchases
Handcrafted and made-to-order rings
Smart rings & NFC rings
International shipping consistency
Our product TNG NFC Ring is produced based on US ring size standards to ensure precision and comfort.
Measuring correctly helps us craft your ring perfectly, especially since NFC rings are custom-sealed and non-resizable.
This is the most accurate method and highly recommended for first-time buyers of custom NFC rings.
A thin strip of paper or string
Pen or pencil
Ruler (millimeters preferred)
Wrap & Snug
Wrap the paper around the base of your finger where you’ll wear your TNG NFC Ring
It should feel snug but not tight.
Mark the Overlap
Mark the exact point where the paper overlaps.
Measure the Circumference
Lay the paper flat and measure the length in millimeters (mm).
This measurement is your ring circumference.
Convert to US Ring Size
Match the circumference to a US ring size chart.
If you already own a ring that fits perfectly, this method is fast and reliable.
A well-fitting ring
Ruler or digital caliper (mm)
Select & Place
Choose a ring that fits the intended finger and place it on a flat surface.
Measure Inner Diameter
Measure straight across the inside of the ring in millimeters (mm).
This is your ring’s diameter.
Convert to US Ring Size
Refer to a US ring size chart to find the matching size.

To ensure the best fit for your TNG NFC Ring keep these tips in mind:
Measure at room temperature
Measure your finger at the end of the day
Avoid measuring after exercise
Measure the exact finger you plan to wear the ring on
Your dominant hand may require a slightly larger size
Because TNG NFC rings are sealed and customized, accurate sizing is crucial.
Method | Accuracy | Recommended For |
|---|---|---|
Paper Strip (Circumference) | ⭐⭐⭐⭐☆ | Custom & first-time orders |
Existing Ring (Diameter) | ⭐⭐⭐⭐⭐ | Reorders & replacements |
For handcrafted products like the TNG NFC Ring, we strongly recommend using the circumference method.
Taking a few minutes to measure your ring size correctly ensures:
Maximum comfort
Secure daily wear
Smooth NFC performance
Zero resizing issues
Accurate measurement guarantees the best experience.
If you’re unsure between sizes, size up or contact our team before placing your order.