Explore all kinds of tools!
Lifestyle
Korean Age Calculator (Korean, International, and Year Age at Once!)
Just enter your date of birth to instantly check your Korean age, international age, and year age! Essential for IDs, part-time jobs, and legal age checks.
BMI Calculator – Check Your Body Fat in 1 Second
Simply enter your height and weight to get your BMI and body fat category instantly. A must-have for a free health check!
WHtR Calculator – Instantly Check Your Belly Fat Risk
Enter your waist and height to instantly assess your abdominal obesity risk! Check your health status now.
Calorie Burn Calculator
Calculate estimated calorie burn by exercise type to plan your workouts more effectively.
Basal Metabolic Rate (BMR) Calculator – Your Daily Energy Needs
Enter your gender, age, height, and weight to instantly estimate your daily calorie needs! The first step for health or dieting.
Daily Water Intake Calculator – The Right Amount for You
Just enter your weight to get your recommended daily water intake! Start your healthy hydration habit here.
Sleep Cycle Calculator – Best Bedtime & Wake-Up Recommendations
Not sure when to sleep or wake up? Get personalized sleep/wake time suggestions for a refreshed morning!
Productivity
Text Character/Word Counter – Real-Time Automatic Calculation
Paste any text and instantly see character, word, and line counts in real time! Essential for reports, SNS, and blog writing.
Pomodoro Timer – Focus, Rest, and Maximum Productivity
25 minutes focus + 5 minutes break; maximize productivity with your ideal cycle! Perfect for work, study, or self-improvement.
Unit Converter – Instantly convert length, weight, and temperature!
Quickly and easily convert various units like length, weight, and temperature. Free real-time calculations, with copy & share support.
D-Day/Date Calculator – How many days left from today?
Quickly and easily calculate days remaining until a specific date (D-DAY), or find the date after 100 days/1 year! Essential for anniversaries, exams, and deadline management.
Text Replace & Transform – Whitespace, line breaks, case, all at once!
Easily replace, clean up spaces/line breaks, and convert case for your text! Real-time, copy & paste supported.
Text Frequency Analyzer – Find most frequent words/characters!
Quickly analyze the most frequent words or characters in your text. Copy and export results easily.
Random Picker – Instantly draw names, numbers, anything!
Randomly select as many winners as you want from a list of names, numbers, or sentences (one per line). Perfect for giveaways, events, team draws.
Dev
JSON Minify/Beautifier – Pretty print & compress JSON instantly
Quickly beautify (pretty print) or minify (compress) your JSON data! Copy and share supported.
Regex Tester – Real-time match & highlight
Enter a regular expression and test string to see real-time matching results! Supports copy, error messages, and various flags.
QR Code/Barcode Generator – Instantly convert URLs and text!
Enter text or a link to instantly generate a QR code or barcode image! Perfect for mobile sharing, business cards, documents, and more.
Code Diff Tool – Instantly compare two codes!
Quickly compare and highlight differences between two codes, texts, or documents line by line. Essential for development and collaboration.
Markdown ↔ HTML Converter – Instant two-way conversion!
Convert Markdown to HTML and HTML to Markdown quickly and accurately. Real-time preview and easy copy/paste.
Color Picker & Converter – HEX, RGB, HSL, OKLCH Supported
Convert color codes between HEX, RGB, HSL, and OKLCH with real-time preview. Enter code or pick a color, copy instantly!
Case Converter – Pascal, snake, kebab, camel, UPPER supported!
Convert text, words, or variable names to PascalCase, snake_case, kebab-case, and more at once. Easy copy & paste.