BandFit
BandFit is a local-first ring sizing utility for existing-ring diameter checks, finger-circumference conversion, global size standards, measurement history, and confidence review before saving or shopping.
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Size Confidence
Review method, boundary distance, saved history, and next action before treating a measurement as ready.
Global Standards
Compare US, UK, EU, and JP ring sizes from the same local measurement.
Estimate Boundary
Screen measurement is an estimate. Confirm with the seller chart or a jeweler before buying.