You can get a free ring sizer by ordering a plastic one from an online jeweller, printing one at home, using an online sizer, or asking a jeweller to measure your finger in store. Mail sizers cost nothing but can arrive slowly, so a printable sizer is the fastest way to start.
Free Ring Sizer Options Compared
| Option | Cost | Speed | Accuracy notes | Best for |
|---|---|---|---|---|
| Plastic sizer by mail | Free at several online jewellers | Slow, depends on shipping | Measures inner diameter with a physical band or cutouts | Buying an engagement ring online |
| Printable ring sizer | Free | Instant | Only accurate if printed at 100% scale | Checking a size today |
| Online ring size calculator | Free | Instant | Needs a measurement or an existing ring as input | Converting a measurement to a size |
| Jeweller in store | Often free, policies vary | Same day | Done by a trained person with a metal sizer | Final check before a large purchase |
| Paper strip or string | Free | Instant | Least precise, depends on how you measure | A rough starting figure |
Free Ring Sizers You Can Order by Mail
These retailers offer a free sizer. Check each retailer’s page before ordering, because offers and shipping options change.
Brilliant Earth
Brilliant Earth says you can order its ring sizer for free and that it ships at no cost. It is a reusable, unisex sizer that works like a miniature belt: slide the pointed end through the buckle to form a loop, fit it over your finger and read the size next to the arrow. You request it with a short form on the Brilliant Earth ring sizer page. The page does not state a delivery time.
Blue Nile
According to a JewelryTalk review, Blue Nile sends a free plastic ring sizer. It is a small board with ring-shaped cutouts from size 3 to 14, which you detach and try on. You request it by entering a name, address and email on Blue Nile’s ring sizer page. The review says free shipping can be slow and that expedited shipping costs about $15 for delivery in two days. It also notes a printable version is available. Confirm these details on Blue Nile’s site.
James Allen
The same review reports that James Allen offers a free ring sizer for US addresses and an online converter that works from a string measurement. We could not open James Allen’s page directly, so confirm the offer there.
How to Use a Free Plastic Ring Sizer Accurately
- Measure when your hands are warm and at their normal size. Cold fingers read smaller and swollen fingers read larger.
- Use the sizer on the finger you will wear the ring on.
- For a belt-style sizer, loop it snugly, check that it passes your knuckle, and read the size at the arrow. For a ring set, choose the ring that slides over the knuckle with slight resistance and sits snugly at the base.
- Repeat on at least three different days and note each result.
- If you fall between two sizes, read our guide to finding the perfect fit in between ring sizes.
- If the ring has a wide band, size up as needed. See choosing the right wide band ring sizer.
For the full process, see our guide on how to measure your ring size.
Free Ring Sizers You Can Use Right Now
Printable ring sizer
Our printable ring size chart gives you a sizer in minutes. Print it at 100% or Actual size, turn off any fit-to-page option, and check the scale against a standard credit card, which is 85.6 mm by 53.98 mm. Read how to use a printable ring sizer for the steps and whether printable ring sizers work for accuracy limits.
Online ring size calculator
If you already have a ring that fits or a measurement in millimetres, our ring size calculator converts it to a US, UK or EU size.
In-store sizing
Many jewellers will size your finger in store. Policies vary, so call ahead and ask whether there is a charge. If you would rather own a sizer, compare options in our ring sizing kit guide.
Which Free Option Should You Choose?
- You need a size today: print a sizer and confirm it with the calculator.
- You are buying an engagement ring online: order a mail sizer and compare it with your printed result.
- You are buying for someone else: see tips for accurately guessing ring size.
- You get different results: read common mistakes people make when measuring ring size.
Free Ring Sizer FAQs
Is there really a free ring sizer?
Yes. Brilliant Earth states that it ships a free ring sizer at no cost, and a third-party review reports that Blue Nile and James Allen also offer one. You can also print a ring sizer or use an online calculator for free.
How long does a free ring sizer take to arrive?
Retailers do not publish a delivery time on the pages we checked. One review notes that free shipping from Blue Nile can be slow and that expedited shipping costs about $15, so order well before you need the size.
Are free ring sizers accurate?
A plastic sizer gives a good starting reading, but fit also depends on your knuckle, band width and the time of day. Measure at least three times on different days and compare the result with a chart.
Can I get a free ring sizer without giving my address?
Yes. A printable ring sizer and an online ring size calculator need no address. Print at 100% scale and check it against a credit card first.
Will a jeweller measure my ring size for free?
Many jewellers will measure your finger in store, but policies vary, so call ahead and ask whether there is a charge.
Do I still need a ring sizer if I already know my size?
A quick check is useful if your size may have changed. Fingers can change with weight, temperature and age, so a second reading can prevent a costly resize.
Sources: Brilliant Earth free ring sizer; JewelryTalk review of the Blue Nile ring sizer.