Tools
Useful online tools like JSON Linter, BMI calculator, and more.
Pomodoro Timer
25-min focus + 5-min break timer with session tracking
developerCron Expression Generator
Build cron expressions visually and preview next run times
developerCSS Gradient Generator
Edit linear/radial gradients visually and copy CSS code
developerQR Code Generator
Convert text/URL to QR code with color and size options
developerNumber Base Converter
Convert between binary, octal, decimal, and hexadecimal
developerTimestamp Converter
Convert between Unix timestamps and date/time
converterImage Converter
Convert and compress PNG, JPG, and WebP images
developerPassword Generator
Generate secure random passwords with strength indicator
converterWorld Clock
Check the current time in major cities around the world
developerMarkdown Preview
Write markdown and preview rendered HTML in real time
developerDiff Checker
Compare two texts and highlight differences line by line
formatterLorem Ipsum Generator
Generate dummy text by paragraphs, sentences, or words
developerRegex Tester
Test regex patterns with match highlighting and group capture
developerURL Encoder/Decoder
Encode and decode URL strings
calculatorDate Calculator
Calculate D-day, date intervals, and add/subtract dates
calculatorLoan Calculator
Calculate loan repayments with amortization schedule
calculatorAge Calculator
Calculate international age, Korean age, and zodiac sign
converterUnit Converter
Convert length, weight, temperature, and volume units
formatterCase Converter
Convert between camelCase, snake_case, UPPER, and 9 more
developerUUID Generator
Generate UUID v4 in bulk with format options
developerHash Generator
Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes
calculatorPercentage Calculator
Calculate percentages, change rates, and ratios
converterColor Converter
Convert between HEX, RGB, and HSL color values
developerBase64 Encoder/Decoder
Encode and decode text to/from Base64
calculatorBMI Calculator
Calculate Body Mass Index (BMI) from height and weight
formatterWord Counter
Count characters, words, and bytes for any text
developerJSON Formatter
Format, validate, and minify JSON
calculatorSavings Calculator
Calculate savings maturity amount from monthly deposits
calculatorCompound Interest Calculator
Calculate compound interest with initial and monthly deposits
calculatorInstallment Calculator
Compare monthly payments and fees by installment period
utilityTimer & Stopwatch
Countdown timer and stopwatch with lap time recording
utilityRandom Picker
Enter items and pick randomly with slot machine animation
utilityOnline Notepad
Take notes in your browser with auto-save and download
utilityText to Speech
Convert text to speech with voice, speed, and pitch control
converterImage Resizer
Resize images while keeping aspect ratio and converting formats
developerJWT Decoder/Encoder
Decode JWT tokens, inspect claims, and encode with HS256
developerHTML Minifier
Minify, beautify, and compare HTML size