Study Tools

Look up idioms, edit mathematical formulas, and search subject, school, paper, or academic information for study support and preliminary research with source verification.

calculate

Calculator

Scientific calculator with trigonometry, logarithms and power operations

functions

Formula Editor

Math formula keyboard input with LaTeX real-time preview and one-click copy

swap_horiz

Unit Converter

Convert length, mass, volume, temperature, area, speed, time and digital storage both ways

palette

Color Tool

Pick colors, convert between formats and check contrast ratios

menu_book

Idiom Dictionary

Look up Chinese idiom meanings, pinyin and origins, with solitaire chaining

language

WHOIS Lookup

Look up a domain registrar, registration date, expiration date and name servers