Tous les outils

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.

Create custom CSS border-radius shapes with a visual editor.

Design beautiful CSS box shadows visually with live preview.

Convert between HEX, RGB, HSL, and CMYK color formats instantly.

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.

Convert between Binary, Hex, Decimal, and Octal number systems.

Translate cron schedules into human-readable descriptions.

Convert CSV to JSON and JSON to CSV instantly.

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.

Generate random UUID v4 and UUID v7 identifiers instantly.

Calculate the current-limiting resistor needed for any LED circuit.

Decode 4-band and 5-band resistor color codes to resistance values instantly.

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

Compute output voltage, current, and power for resistor voltage divider circuits.

See how your investments grow over time with compound interest.

Calculate monthly payments, total interest, and amortization for any loan.

Find mean, median, and mode for your datasets.

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

Calculate sale prices, savings, and discount percentages instantly.

Calculate percentages, increases, and differences instantly.

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

Convert length, weight, temperature, and more.

Calculate network range, broadcast address, and usable hosts from IP/CIDR.

Calculate equivalent exposure settings for aperture, shutter speed, and ISO.

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.

Generate URL-safe slugs from any text instantly.

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.