Find your ring size in seconds—without visiting a jeweller, using paper strips, or guessing. RingFit turns your phone into an accurate ring sizer and ring-size measurement tool. Measure a ring you already own or measure your finger directly on screen, then convert the result to US/Canada, UK, EU, Japan, India, and other international standards.
Used by 500,000+ people for engagement rings, wedding bands, gifts, and online jewellery shopping.
RING SIZER—MEASURE A RING
• Place a ring on the screen and match the circle to its inner edge
• View the inner diameter and circumference in millimetres
• See the matching size across international ring-size systems
• Useful for surprise gifts when you can borrow a ring they already wear
FINGER SIZER—NO RING NEEDED
• Measure your finger directly on your phone screen
• Follow a simple on-screen guide for a comfortable fit
• Ideal for first-time buyers and online ring shopping
RING SIZE CHART & CONVERTER
• Compare diameter, circumference, and sizes in one chart
• Convert between US/Canada, UK, EU, Japanese, Indian, and other standards
• Keep an international ring-size finder in your pocket
SAVED SIZES & GIFT PROFILES
Save measurements and create profiles for your partner, family, and friends.
GOLD & SILVER RATES + JEWELLERY CALCULATOR
Check current gold and silver rates worldwide and estimate jewellery value using weight and purity.
JEWELLERY CARE GUIDE
Learn how to clean and store gold and silver jewellery and keep rings looking their best.
HOW TO MEASURE RING SIZE AT HOME
Choose Ring Sizer if you have a ring or Finger Sizer if you do not, follow the guide, and read your size in seconds. No printable chart, string, or measuring tape is required.
Download RingFit and get the right fit the first time.
Questions or feedback? Email avinyasys@gmail.com.
Measure ring and finger size fast. US, Canada, UK and EU size converter