Conversion methodology and sources
China Converters is designed as a practical tool library for people reading Chinese marketplace sizes, mainland units, RMB prices and Chinese lunar dates. This page explains what each converter assumes and where the numbers come from.
Quick answer: Modern mainland unit converters use current metric definitions, size tools use national-standard style labels plus retail chart behavior, currency uses live market-rate data when available, and the lunar converter uses a tested 1900-2100 calendar library.
01 /Size conversion assumptions
Chinese clothing sizes
Clothing converters are based on common Chinese letter labels and 160/84A-style national-standard body codes. The result is an estimate because brands can change ease, cut and fabric stretch.
Shoe sizes
Chinese shoe labels are often shown like EU sizes in marketplaces, while official shoe marking is foot-length based. The converter therefore shows both label estimates and foot length in centimeters.
Taobao charts
Guide pages explain the Chinese chart words shoppers actually see, including bust, waist, shoulder width, garment length and finished-garment measurements.
02 /Unit conversion assumptions
Unit tools use modern mainland China values unless a page clearly says otherwise. Historical texts, regional markets and traditional medicine references can use older values, so pages with likely ambiguity include a usage note.
03 /Currency and calendar sources
RMB / CNY exchange rates
The currency converter requests the latest available CNY rates from Frankfurter. If the request fails, the page uses a bundled fallback snapshot so the tool still produces a clearly labeled estimate.
Chinese lunar dates
The calendar converter uses the solarlunar JavaScript library for Gregorian and Chinese lunar conversions in the 1900-2100 range. Leap lunar months are only valid in certain years.
Not professional advice
Currency results are not bank quotes or trading advice. Size results are not a fit guarantee. The tools are meant for shopping, travel planning, research and quick interpretation.
04 /How updates are handled
Static conversion constants are reviewed when pages are updated. Currency rates are dynamic and labeled on the converter itself. When a user reports a conflicting marketplace chart, the page is checked against the chart context before the tool is changed.
Found a chart, unit or date result that looks wrong? Send the example through the contact page with the source page or screenshot context.
05 /Editorial review record
Who creates the content
Pages are published by China Converters editorial. We do not invent individual expert names; the responsible publisher is the site itself.
How pages are checked
Converters are reviewed against formula logic, sample values, source assumptions and internal links before deployment.
Why pages exist
The site is built to answer practical Chinese conversion problems directly, with the tool first and the explanation below.
Last editorial review: June 2, 2026. See the original guides for deeper notes on sizing, Taobao charts, RMB labels, lunar calendar limits and modern unit values.