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Kiwen Upgraded Ring Sizer Measuring Tool, Ring Measurer and Ring Sizer 1-17 | Measure Ring Jewelry Size at Home, Magnifier for Clear Reading, Includes Half Sizes, Reusable for Men & Women

  • Based on 2,108 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Aug 18
Order within 8 hours and 8 minutes
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Edition: Magnifier Edition


Features

  • Built-in Magnifier Upgraded ring sizer with clear magnifying glass for quick, accurate scale reading without eye strain. Perfect for online ring shopping or surprise gifts
  • Easy to Use Wear it like a ring, adjust to a snug spot, and read the inner diameter of the ring directly from the magnifying glass. Just as easy to take off
  • Measuring size range US size 117 including half sizes (6.5, 9.5, etc.). Clear markings help you find the perfect ring size. No guesswork perfect fit every time
  • Reliable & Reusable Fine workmanship, high-quality soft plastic. Flexible for a comfortable fit, yet firm enough for consistent sizing. Built to last for all your future jewelry needs
  • Wide Application Not just for measuring engagement rings, wedding bands, proposal rings, birthday rings. Also works for bracelets and any online jewelry purchase. Ideal for home use or surprise gifts for your husband, wife, boyfriend, or girlfriend

Description

The KIWEN ring sizer measuring tool helps you find the perfect US ring size from home. It features a built-in magnifier for quick, accurate scale reading without eye strain. The tool covers US sizes 1 to 17, including half sizes such as 6.5 and 9.5. Made of soft, durable plastic, it is reusable and flexible for a comfortable fit while remaining firm enough for consistent sizing. Use it like a ring: slip it on, adjust to a snug spot, and read the inner diameter directly through the magnifying glass. It is easy to take off and reuse anytime. Ideal for measuring engagement rings, wedding bands, proposal rings, birthday rings, bracelets, and any online jewelry purchase. Perfect for home use or surprise gifts for men and women. For best results, measure multiple times a day and don't forget your knuckle.

Package Dimensions: 6.42 x 2.76 x 0.43 inches


Item model number: Ring Sizer


Item Weight: 0.634 ounces


Manufacturer: KIWEN


Date First Available: March 28, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Clever design and sturdy
Edition: Magnifier Edition
Very clever design! The little magnifying piece that shows you the size is shaped like a tiny, round stone, so that when you put on the sizer, it looks like an actual ring. Besides the clever design, I found the little magnifying piece big enough to read the size number. The item is simple yet very functional and inexpensively priced. ... show more
Reviewed in the United States on December 26, 2025 by Visitor

  • Perfect ring sizer
Edition: Magnifier Edition
Love it! No second guessing on ring sizing
Reviewed in the United States on May 13, 2026 by Marcie B

  • Adjustable Ring Sizer Tool – Easy and Accurate Finger Measurement at Home
Edition: Magnifier Edition
This ring sizer is very easy to use and gives an accurate measurement in just seconds. I like that it adjusts comfortably on the finger without hurting or feeling too tight. The numbers are clear and easy to read, making it perfect for checking ring size at home before ordering. Very practical and lightweight. ... show more
Reviewed in the United States on December 18, 2025 by Alejandra Almeida

  • Easy to Use and Good Value
Edition: Magnifier Edition
This was very easy to use and gave us the correct ring size to be able to order a ring as a gift! Definitely worth the money.
Reviewed in the United States on March 25, 2026 by ASHLEY M THOMAS

  • Gold on Black is difficult to read
Edition: Magnifier Edition
It works well but the gold on black makes it hard to read unless you are in the right light. I would give this 5 stars if it had been silver or white on black instead of gold
Reviewed in the United States on December 12, 2025 by Victoria

  • Works great
Edition: Magnifier Edition
Super cheap way to measure ring size! Very accurate and compact to store.
Reviewed in the United States on March 3, 2026 by Stacy E

  • I didn’t know I needed this, but I did
Edition: Magnifier Edition
I am glad I bought this. If you buy rings without trying them on, I recommend this. It has been accurate and saves me returns due to size
Reviewed in the United States on July 18, 2026 by Brenna Mom

  • Simple ring sizer
Edition: Magnifier Edition
Little magnifying lens and clear numbers. Looks like a zip tie. Small detents minimize slipping, yet easy to adjust.
Reviewed in the United States on May 26, 2026 by Robert Forest

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