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, Ceramic Looks NFC Ring, or a Fully Customized NFC Ring.

A ring that fits perfectly ensures smooth daily use for:

• Touch ’n Go payments

• Public transport (MRT, LRT, Komuter)

• Parking & access systems

• Digital NFC business card sharing

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.

Why US Ring Size Is Important for NFC Rings

US ring sizing is widely used for:

• Online ring purchases

• Handcrafted and made-to-order rings

• Smart rings & NFC rings

• International shipping consistency

All our products including the TNG NFC Ring, Ceramic Looks NFC Ring, and Fully Customized NFC Ring are 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.

Method 1: Measure Your Ring Size Using a Paper Strip (Circumference Method)

This is the most accurate method and highly recommended for first-time buyers of custom NFC rings.

What You’ll Need:

• A thin strip of paper or string

• Pen or pencil

• Ruler (millimeters preferred)

Step-by-Step Guide:

1. Wrap & Snug
   Wrap the paper around the base of your finger where you’ll wear your TNG NFC Ring or Ceramic Looks NFC Ring.
   It should feel snug but not tight.
2. Mark the Overlap
   Mark the exact point where the paper overlaps.
3. Measure the Circumference
   Lay the paper flat and measure the length in millimeters (mm).
   This measurement is your ring circumference.
4. Convert to US Ring Size
   Match the circumference to a US ring size chart as below.

✅ Best for:
Custom orders, handcrafted rings, and Fully Customized NFC Ring purchases.

Method 2: Measure an Existing Ring (Diameter Method)

If you already own a ring that fits perfectly, this method is fast and reliable.

What You’ll Need:

• A well-fitting ring

• Ruler or digital caliper (mm)

Step-by-Step Guide:

1. Select & Place
   Choose a ring that fits the intended finger and place it on a flat surface.
2. Measure Inner Diameter
   Measure straight across the inside of the ring in millimeters (mm).
   This is your ring’s diameter.
3. Convert to US Ring Size
   Refer to a US ring size chart below to find the matching size.

✅ Best for:
Replacing an old ring or upgrading to a Ceramic Looks NFC Ring.