Calculators, converters, PDF tools, and more — right in your browser.
Format, validate, and beautify JSON with real-time error highlighting.
Encode and decode URLs in real time.
Convert between HEX, RGB, and HSL color formats with live preview.
Encode and decode Base64 strings with UTF-8 support.
Convert between Unix timestamps and readable dates.
Generate strong, secure passwords with customizable options.
Generate QR codes from text or URLs. Download as PNG.
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly.
Test and debug regular expressions with real-time match highlighting.
Decode and inspect JWT tokens with header, payload, and signature analysis.
Convert between JSON and CSV formats with custom delimiters.
Resize images to any dimension with aspect ratio lock.
Compress images with adjustable quality. No upload required.
Calculate subnet details from IP address and CIDR prefix.
Convert between metric and imperial units instantly.
Calculate your GPA with support for 4.0, 4.3, and 4.5 scales.
Calculate percentages, increases, decreases, and ratios instantly.
Calculate your Body Mass Index with metric and imperial units.
Calculate D-Day, date differences, and date add/subtract.
Convert numbers between binary, octal, decimal, and hexadecimal.
Merge multiple PDF files in your browser. No upload required.
Extract specific pages from a PDF. No upload, 100% private.
Count characters, words, sentences, and paragraphs in real time.
Convert text to uppercase, lowercase, title case, camelCase, and more.
Generate placeholder text for design and development.
Write Markdown and preview rendered HTML in real time.
Compare two texts and highlight differences line by line or word by word.
Analyze word frequency and distribution in any text.
Convert between CRLF, LF, and CR line endings with extra text utilities.
Complete ASCII character code table with DEC, HEX, and OCT values.
Complete list of 140 CSS named colors with HEX and RGB values.
Complete HTTP status code reference with descriptions.
HTML special character entity reference table.
Essential keyboard shortcuts for Windows and macOS.
Interactive periodic table with all 118 elements, color-coded by category.
Calculate monthly payments, total interest, and amortization schedules.
Calculate compound interest with regular contributions over time.
Calculate tips and split bills easily among any number of people.