How to Measure Ring Size at Home

Get your perfect ring size in minutes using our free online tool. No printer needed – just your phone or computer and a coin or credit card.

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Step-by-Step Guide

1
Choose Your Calibration Object

Select a coin (US Quarter, Euro, etc.) or credit card. Coins offer more privacy as you don't need to handle your card.

Pro Tip: For most accurate results, use a coin with a known diameter.
2
Calibrate Your Screen

Place your chosen object on the screen and adjust the on-screen guide until it matches perfectly. This ensures measurements are accurate for your specific device.

Pro Tip: Make sure you're viewing at 100% zoom for accurate calibration.
3
Measure Your Ring

Place your existing ring on the screen circle and adjust until the inner edge matches. Alternatively, wrap a string around your finger to measure.

Pro Tip: Measure at the end of the day when fingers are slightly larger.
4
Read Your Size

Your ring size is displayed instantly in US, UK, EU, and Australian standards. Note down all sizes for shopping convenience.

Pro Tip: If between sizes, choose the larger size for comfort.

Expert Tips for Accurate Measurement

Measure multiple times for accuracy
Temperature affects finger size - warm fingers are larger
Wider bands need a slightly larger size
Your dominant hand is usually 0.5 size larger
Avoid measuring when hands are cold or swollen

Popular Brand Size Charts

Find size charts for popular jewelry brands with conversion guides:

PandoraSwarovskiCartierTiffany
Planning a Surprise?

Secret Proposal Ring Size Guide

Learn how to secretly measure your partner's ring size without giving away the surprise. Our Stealth Mode hides all size numbers!

View Secret Sizing Guide

Ready to Find Your Size?

Our online ring sizer works on any device. No downloads, no printing – just accurate sizing.

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