Comfort-fit vs standard-fit sizing
Comfort-fit describes a rounded inner profile; standard-fit usually has a flatter interior. The labels describe geometry, not a universal conversion between ring sizes.
Wide-band size calculator
Estimate the order size for a wider band, then confirm before buying a non-resizable ring.
This advisor uses editorial rules to suggest sizes to try. Its adjustments have not been validated by a wearer study and are not manufacturer sizing instructions. Compare the same width and inner profile with a jeweler.
Sources checked for the scope described here. Tool adjustments are editorial estimates, not measured fit outcomes or retailer quotes; specialist and native-language sign-off remain separate.
Ring fit fix advisor
Choose the fit problem and get the safest next step before resizing, replacing or buying another ring.
Compare the inside, not just the size label
Ask which inner profile the finished ring uses. Compare comfort-fit and standard-fit samples at the same width; a different width can obscure the effect of the profile.
Do not apply two automatic corrections
Adding a wide-band allowance and subtracting a comfort-fit allowance is not a validated formula. If a sample feels loose at the base but tight at the knuckle, ask a jeweler to assess the shape and available options.
Why two charts can differ
Benchmark’s guide recommends a half US size increase for its rings wider than 5 mm. Its comfort-fit advice instead rounds down between sizes, with a large-knuckle exception. This is a manufacturer-specific example, not a rule for every ring.
Frequently asked questions
Compare the inside, not just the size label?
Ask which inner profile the finished ring uses. Compare comfort-fit and standard-fit samples at the same width; a different width can obscure the effect of the profile.
Do not apply two automatic corrections?
Adding a wide-band allowance and subtracting a comfort-fit allowance is not a validated formula. If a sample feels loose at the base but tight at the knuckle, ask a jeweler to assess the shape and available options.
Use the ring size converter, see the full chart, or read how to measure your ring size.