Free Online Tools

Convert between different measurement units including temperature, length, weight, speed, volume, area, data storage, and pressure.

Transform and analyze text with word counting, case conversion, Lorem Ipsum generation, text reversal, and more.

Perform common calculations including percentages, BMI, loans, tips, discounts, age, and number base conversions.

Format, encode, decode, and validate data with JSON, Base64, URL, HTML, regex, UUID, hash, and color tools.

Work with colors and images using a color picker, gradient generator, palette creator, Base64 converter, and aspect ratio calculator.

Convert timezones, work with Unix timestamps, calculate date differences, and use countdown timers and stopwatches.

Convert between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales.

Count words, sentences, paragraphs, and characters in any text.

Calculate percentages, percentage changes, and percentage differences.

Format, validate, and pretty-print JSON with syntax highlighting.

Generate random UUID v4 identifiers instantly with one click.

Pick colors and get HEX, RGB, and HSL values simultaneously.

Convert times between different timezones worldwide instantly.

Generate secure random passwords with custom length and characters.

Convert Markdown to HTML with headings, bold, italic, links, and code.

Search and copy emojis instantly. Click to copy any emoji.

Convert between px and rem units with custom base font size.

Compare two texts and highlight differences line by line.

Test typing speed with WPM, accuracy, and live character tracking.

Generate HTML meta tags for SEO with title, description, and more.

Convert between hourly, daily, weekly, monthly, and annual salary.

Calculate subnet info from IP/CIDR: network, broadcast, hosts.

Check WCAG contrast ratio with AA and AAA pass/fail results.

Pomodoro timer with configurable work/break and session tracking.