How to Get the Right Ring Size

1. Use a ring you already own (most accurate at home)

  • Take a ring that fits the same finger.
  • Measure the inner diameter (not outer edge).
  • Match it to a size chart (EU sizes are common in Denmark).

This is also exactly how most apps work.

2. Measure your finger with string or paper

  • Wrap a strip of paper/string around your finger
  • Mark where it overlaps
  • Measure the length in mm
  • Convert to ring size

⚠️ This method is less precise because paper can stretch or be too tight.

3. Measure at the right time (very important)

  • Measure in the evening (fingers are slightly larger)
  • Avoid measuring when your hands are cold
  • Make sure the ring:
    o Slides over the knuckle with slight resistance
    o Doesn’t spin too much

These small factors can change your size noticeably

4. Use a professional ring sizer (best overall)

  • Jewelers use metal sizing tools for perfect accuracy
  • Many online shops send free ring sizers

Ring Size Apps (Like Ring Sizer)

These apps turn your phone into a measuring tool.

How ring size apps work

Most apps use one of these methods:

  • Place your ring on the screen and match a circle
  • Measure your finger directly using touch calibration
  • Use screen calibration (with a coin or card) for accuracy

Some advanced apps can measure within ±0.2 mm accuracy

Popular Ring Size Apps

1. Ring Sizer (general apps on iOS & Android)

Place ring on screen → match circle

  • Shows sizes in EU, US, UK
  • Simple and fast

 One of the most commonly used types of apps

2. RingFit – Ring Size App

  • Measures both ring and finger
  • Converts between international sizes
  • Useful if you don’t have a ring

3. Ring Fing / RingSizer apps

  • Visual guides for precise alignment
  • Supports multiple measurement systems
  • Saves your size for later

4. Online Ring Sizer (no download)

  • Ring Size App
  • Calibrate with a coin or credit card
  • Place ring on screen and adjust
  • Works instantly in browser

⚠️ Are Ring Sizer Apps Accurate?

✔️ Good for:

  • Getting a very close estimate
  • Buying rings online
  • Measuring secretly for a gift

❗ But:

  • Not always 100% perfect
  • Screen size & calibration matter
  • Best to double-check with a jeweler for expensive rings

Pro Tips (Most People Miss These)

  • Your left and right hands are different sizes
  • Wider rings need slightly bigger size
  • If between sizes → go slightly bigger
  • For surprise proposals → secretly measure an existing ring

Simple Recommendation

  • Quick & easy: Use a ring sizing app
  • Best accuracy: Combine app + physical ring sizer
  • Perfect result: Confirm with a jeweler