New Tools

Snake Case & Camel Case Converter

Quickly convert between snake_case and camelCase naming, with batch processing and handling of common edge cases.

Chinese Zodiac Lookup

Enter a Gregorian birth date or year to instantly find the corresponding Chinese zodiac sign, heavenly stem and earthly branch, and the Five Elements.

Solid Color Image Generator

Generate solid-color images of any color and size online for free, with PNG/JPG download — great for placeholders and backgrounds.

Electrolyte Replacement Calculator

Estimate the sodium, potassium, and water you need to replace based on body weight, exercise duration, and sweat level — for smarter hydration.

Reaction Time Test

Measure your visual reaction time online; take multiple tries for an average to see where your reaction speed stands.

Phone Number Value Estimator

Based on digit patterns and "lucky number" culture, get a fun reference price for your phone number and see how "valuable" it is.

Vertical Text Converter

Convert horizontal text into traditional vertical layout, great for calligraphy, classical Chinese, and poster design.

Lanzou Cloud Direct Link Parser

Enter a Lanzou Cloud share link to instantly extract the real direct link for easy downloading or external linking.

Time Deposit Interest Calculator

Enter the principal, term, and rate to quickly calculate the interest at maturity and total principal plus interest.

Monthly Interest Payout Calculator

Quickly calculate the monthly interest payout and total interest for fixed-principal deposits. Supports various principal amounts, terms, and annual interest rates.

Curtain Fabric Calculator

Enter the window width, pleat ratio, and fabric width to quickly work out how many meters of fabric a curtain needs, so you don't buy too much or too little.

Call Deposit Calculator

Easily calculate the interest and total principal-plus-interest on a call deposit, supporting both 1-day and 7-day types.

Lump-Sum Deposit, Installment Withdrawal Calculator

Enter the principal, annual rate, term, and withdrawal interval to quickly calculate each withdrawal amount and total interest.

Tax Late Fee Calculator

Enter your unpaid tax amount and overdue days to quickly calculate your tax late fees online.

Letter Icon Generator

Enter text to quickly generate circular or rounded-square letter icons, great for site icons, avatars, and UI elements.

Online Stopwatch Timer

Free online stopwatch timer with no download required. Features one-click start/stop, lap tracking, and easy time copying.

Yu'e Bao Earnings Calculator

Enter the principal, annualized yield, and number of days to quickly estimate your Yu'e Bao earnings.

Online Text Formatting Tool

Automatically handle first-line indents, clean up extra blank lines and spaces, and unify punctuation for clean, well-formatted text.

Chinese Gender Predictor Chart (2026)

Predict your baby's gender in 2026 using the traditional Chinese Gender Chart. Simply enter the mother's lunar age and conception month. For entertainment purposes only, not scientifically proven.

Precious Metals Contract Lookup

Quickly look up precious metals contract specifications, including trading units, pricing formats, and margin requirements for COMEX, LBMA, SGE, and more.