All Tools
38 free tools — all running 100% in your browser.
JSON Formatter & Validator
Format, validate, and minify JSON data instantly.
Open tool →Base64 Encoder & Decoder
Encode text to Base64, or decode Base64 back to plain text. Supports full UTF-8.
Open tool →URL Encoder & Decoder
Encode or decode URL components and query strings.
Open tool →HTML Entity Encoder & Decoder
Encode special characters to HTML entities or decode entities back to text.
Open tool →JWT Decoder
Decode and inspect JSON Web Tokens (JWT) — view header, payload, and expiration.
Open tool →UUID v4 Generator
Generate random UUIDs (v4) in bulk with one click.
Open tool →Password Generator
Generate secure passwords with crypto.getRandomValues(). Length slider, character sets, entropy meter.
Open tool →Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes from any text using your browser's built-in crypto.
Open tool →Lorem Ipsum Generator
Generate lorem ipsum placeholder text by paragraphs, sentences, or words.
Open tool →JSON to CSV Converter
Convert JSON arrays to CSV format with one click. Supports nested objects.
Open tool →Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports UTC and local time.
Open tool →Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases instantly.
Open tool →CSS Unit Converter
Convert between px, rem, em, pt, and other CSS units with a configurable base font size.
Open tool →Image to Base64 Converter
Convert images to Base64 data URLs for embedding directly in HTML or CSS.
Open tool →Regex Tester
Test regular expressions in real-time with match highlighting and capture group display.
Open tool →Word Counter & Text Analyzer
Count words, characters, sentences, and paragraphs. Estimate reading and speaking time.
Open tool →Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
Open tool →Text Diff Checker
Compare two texts side-by-side and highlight the differences between them.
Open tool →URL Slug Generator
Convert titles and text into clean, SEO-friendly URL slugs.
Open tool →Markdown Preview
Write Markdown and see a live HTML preview side-by-side.
Open tool →Color Picker
Pick colors and convert between HEX, RGB, HSL, CMYK. Check WCAG contrast ratios.
Open tool →CSS Gradient Generator
Create beautiful CSS linear and radial gradients with a visual editor and copy the code.
Open tool →CSS Box Shadow Generator
Create CSS box shadows visually with sliders for offset, blur, spread, and color.
Open tool →Percentage Calculator
Calculate percentages: what is X% of Y, X is what % of Y, and percentage change.
Open tool →Discount Calculator
Calculate sale prices, savings, and discount percentages for any amount.
Open tool →Tip Calculator
Calculate tips and split bills between any number of people.
Open tool →BMI Calculator
Calculate your Body Mass Index (BMI) with both metric and imperial units.
Open tool →Aspect Ratio Calculator
Calculate and convert aspect ratios for images, video, and responsive design.
Open tool →Unit Price Calculator
Compare products by unit price (e.g. per oz, per ml) to find the best value.
Open tool →Life Progress Bar — 4000 Weeks
Visualize how much of your life has passed with the 4000 Weeks grid. Enter your age and see your weeks.
Open tool →Age Calculator
Calculate exact age in years, months, days, hours, and minutes from any date.
Open tool →Pomodoro Timer
A simple Pomodoro technique timer — 25 min work, 5 min break. Customizable intervals.
Open tool →Online Clock
Real-time digital clock with 12/24 hour format toggle and date display.
Open tool →Compound Interest Calculator
Calculate compound interest growth and compare it with simple interest and total contributions.
Open tool →Loan Calculator
Calculate monthly payments, total interest, and amortization for any loan.
Open tool →Weather Widget
Real-time weather conditions with temperature, humidity, wind speed, and precipitation.
Open tool →Air Quality Monitor (PM2.5)
Real-time air quality index (AQI) and PM2.5 levels for your location.
Open tool →Sakura Bloom Forecast
Interactive Japan map showing cherry blossom bloom forecasts across all regions.
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