Personal Measurements tool map
Clothing & sizing
Clothing, footwear, and personal size estimates.
Choose the tool whose inputs and output match your task. Check each calculator’s assumptions and limitations before using its result.
Latest update:
Clothing and sizing tools turn a few body measurements into a first size to try — not a guarantee. The bra size calculator applies a named two-measurement method to suggest a band and cup as a try-on starting point. The shoe size calculator maps men’s, women’s, and children’s US, UK, and EU inputs to an assumed foot length, and the ring size calculator finds the nearest row in a ten-row crosswalk from a finger or ring measurement. When choosing, take measurements as each tool instructs, then compare the result with the exact brand, retailer, or jeweler chart before buying. Browse every measurement tool in the Personal Measurements collection.
3 of 3 calculators
Clothing & sizing3 calculators
Legacy Bra Size Estimate
PopularUse the named oc-bra-legacy-v1 two-measurement method as a non-universal try-on estimate, then verify fit with the intended manufacturer.
Updated
Verified
Legacy Ring Size Chart
Find the nearest row in oc-ring-legacy-chart-v1 without implying a universal conversion or ISO 8653 conformance.
Updated
Verified
Legacy Shoe Size Formula
Run oc-shoe-legacy-formula-v1 across its men's, women's, children's, US, UK, EU, and assumed-foot-length branches.
Updated
Verified
Legacy Bra Size Estimate
PopularUse the named oc-bra-legacy-v1 two-measurement method as a non-universal try-on estimate, then verify fit with the intended manufacturer.
Updated
Verified
Legacy Ring Size Chart
Find the nearest row in oc-ring-legacy-chart-v1 without implying a universal conversion or ISO 8653 conformance.
Updated
Verified
Legacy Shoe Size Formula
Run oc-shoe-legacy-formula-v1 across its men's, women's, children's, US, UK, EU, and assumed-foot-length branches.
Updated
Verified
Frequently asked questions
- Is this a US or UK standard?
- No. This calculator uses the OverCalculator legacy two-measurement method (oc-bra-legacy-v1), not a universal US, UK, retailer, or manufacturer standard.
- How should I measure?
- If you choose this estimate, record snug underbust and fullest-bust values consistently; then verify fit using the intended brand’s own guide or fitting service.
- What does centimeter mode do?
- It divides both values by 2.54 as a declared oc-bra-legacy-v1 unit assumption before applying the same legacy arithmetic. This page does not claim independent unit-definition authority.