Convert between Wei, Gwei, Ether, and all intermediate units instantly.

Convert any EVM address to its proper checksummed format.

Generate MD5 checksums for text or local files directly in your browser.

Generate SHA-1 checksums for text or local files with private browser-based processing.

Generate SHA-256 checksums for text or local files with private browser-based processing.

Generate harmonious color palettes from a base color using color theory algorithms.

Select colors and get HEX, RGB, and HSL values.

Verify WCAG accessibility contrast ratios.

Create beautiful CSS gradients visually — linear, radial, and conic with full customization.

Convert images to Base64 data URIs for embedding directly in HTML, CSS, or JSON.

Convert text to Base64 and decode Base64 back to text.

Translate cron schedules into human-readable descriptions.

Compare two texts and highlight the differences line by line.

Encode special characters to HTML entities and decode them back.

Write HTML, CSS, and JavaScript and see a live preview instantly.

Validate, format, and beautify your JSON code.

Decode and inspect JSON Web Tokens to view header, payload, and claims.

Write Markdown and see a live HTML preview side by side.

Test and debug regular expressions with real-time match highlighting.

Convert Unix timestamps to human-readable dates and vice versa.

Encode text to URL-safe format and decode percent-encoded strings.

Find mean, median, and mode for your datasets.

Calculate your Body Mass Index with metric or imperial units and see your health category.

Calculate percentages, increases, and differences instantly.

Decode 3-digit and 4-digit SMD resistor codes instantly.

Calculate tips, split bills, and find per-person shares instantly.

Convert length, weight, temperature, and more.

Generate secure, random passwords with custom length.

Create QR codes for URLs, text, or contact info.

Create click-to-chat links without saving contacts.

Search and replace text with literal matching, regex support, and live previews.

Strip all numeric characters from text.

Strip symbols, punctuation, and special characters from text.

Sort lines A–Z or Z–A with deduplication options.

Convert between camelCase, snake_case, PascalCase and more.

Count words, characters, sentences, paragraphs, and reading time.