Word & Character Counter
Count characters, words, lines, and UTF-8 bytes as you type.
All tools
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Case Converter
Switch text between upper, lower, title, camel, snake, and kebab case.
URL Encoder / Decoder
Safely encode or decode URLs and query-string values.
Base64 Converter
Encode Unicode text or small files to Base64 and decode them locally.
JSON Formatter
Format, minify, validate, and inspect structured JSON instantly.
Text Diff
Compare two documents line by line and spot every change.
Dummy Data Generator
Generate names, emails, UUIDs, and sample sentences for testing.
D-Day Calculator
See days remaining or elapsed between today and any date.
Age & Zodiac Calculator
Calculate international age, zodiac animal, and the next birthday.
Korean Lunar Calendar
Convert supported Korean solar and lunar dates in either direction.
World Time Planner
Compare major cities and find practical meeting hours across time zones.
Percentage Calculator
Calculate shares, percentage change, discounts, and margins.
Savings Interest
Estimate simple or compound returns and after-tax maturity value.
GPA Calculator
Calculate weighted GPA on 4.3 or 4.5 scales.
BMI Calculator
Estimate body mass index and view the standard category range.
Image Format Converter
Convert JPG, PNG, and WebP inside your browser.
Image Compressor
Reduce image dimensions and quality with a live size comparison.
Unit Converter
Convert length, area, weight, volume, temperature, and data units.
QR & Barcode Generator
Turn text into a downloadable QR code or Code 128 barcode.
Palette Extractor
Sample an image and extract a practical HEX color palette.
Secure Password Generator
Create strong, customizable passwords entirely in your browser.
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384, or SHA-512 digests from text.
Regular Expression Tester
Test JavaScript regex patterns and inspect every match instantly.
URL Parser & Inspector
Break any URL into protocol, host, path, parameters, and hash.
Unix Timestamp Converter
Convert Unix seconds or milliseconds to local and UTC date-time.
Date Difference Calculator
Measure the exact days and calendar span between two dates.
Tip & Split Bill Calculator
Calculate tips, totals, and each person's share of a bill.
Loan Payment Calculator
Estimate monthly payments, total interest, and repayment amount.
VAT & Sales Tax Calculator
Add or remove VAT and sales tax at any percentage rate.
Unit Price Comparator
Compare two package prices by weight, volume, or item count.
Fuel Cost Calculator
Estimate fuel use and travel cost from distance and efficiency.
HEX · RGB · HSL Converter
Convert colors between HEX, RGB, and HSL with a live preview.
Aspect Ratio Calculator
Find image ratios and resize dimensions without distortion.