Format Converter for Teacher

18 format converter tools hand-picked for Teacher.

Chinese Numeric Converter

Arabic ⇄ Chinese number — simple (一二三), formal (壹貳參), or amount (金额大写 with 元角分).
Chinese Pinyin Converter

Chinese characters to pinyin — with tone marks or numbers, supports simplified and traditional.
Chinese Zodiac Sign Checker (Sheng Xiao)

Chinese zodiac checker — your animal sign, element, compatibility, lucky numbers/colors by birth year.
Decimal to Fraction Converter

Turn 0.75 into 3/4, type 0.(3) to get 1/3, or flip a fraction back to its decimal with the repeating block marked
DOI Deduplicator

Find duplicates and keep one clean copy of dois from pasted text or uploaded local files.
DOI Extractor

Extract, dedupe, and export dois from pasted text or uploaded local files.
DOI List Converter

Convert dois from pasted text or uploaded local files.
DOI List Validator

Validate and explain issues in dois from pasted text or uploaded local files.
DOI Normalizer

Normalize, sort, and prepare dois from pasted text or uploaded local files.
Light Year Converter

Type one distance, read it as light-years, parsecs, AU, light-seconds, km and miles at once, all in your browser
Lunar Calendar Converter (Chinese Nongli)

Gregorian ⇄ Chinese Lunar (Nongli) calendar — bi-directional, accurate 1900-2100.
Markdown Link Extractor

Upload Markdown and extract inline links, reference links, images, and bare URLs into a local CSV.
Morse Code Translator

Text to Morse code and back — encode, decode, audio playback, ITU standard.
Percent to Fraction Converter

Percent ⇄ fraction, both ways. 25% becomes 1/4, 3/4 becomes 75%, decimal percents and values over 100% included, fully reduced, browser-only.
Tally Marks Converter

Number to tally marks and back, in Unicode, the five-bar gate, or Chinese 正, with one-click copy, all in your browser
Text File Cleaner

Upload a text file and remove BOM, null bytes, trailing spaces, and excessive final blank lines locally.
Text File Line Ending Converter

Upload or paste text and convert CRLF, CR, and LF endings to a consistent LF or CRLF output locally.
Traditional ⇄ Simplified Chinese Converter

Traditional ⇄ Simplified Chinese — fast, character-level, no API.