JP to UK Ring Size (Standard Fit)

1 JP value = 3.380906 UK value · profile-dependent conversion · context: size system and fit profile

Direct Answer

1 JP value equals 3.380906 UK value

This result depends on the selected profile context: size system and fit profile.

For 4 JP value, this profile returns 6.510827 UK value.

Converter Calculator

1 JP value =
3.380906 UK value

Explanation

JP converts to UK by normalizing to ring diameter in millimeters, then remapping to the target system. Fit profile fixed: Standard Fit.

For JP value to UK value, the active size system and fit profile determines the conversion constants applied to every value.

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Keep the same profile in both directions to avoid mixing lookup systems that use different size mappings.

Method & Reference (Verified)

  • Method basis: profile-bound mapping; constants depend on the selected profile encoded in the route.
  • Profile reference: size system and fit profile.
  • Consistency rule: keep the same profile in mirror direction to avoid mixing incompatible mappings.

Common Conversion Values

JP valueUK value
4 6.510827
5 7.554134
6 8.597441
7 9.640748
8 10.684055
9 11.727362
10 12.770669
11 13.813976
12 14.857283
13 15.900591