Free Online Tools

Generate strong, secure random passwords with customizable length and character types.

Count words, characters, sentences and paragraphs in your text instantly.

Format, beautify and validate JSON data with syntax highlighting.

Create QR codes for text and URLs instantly, preview them online, and download the image in one click.

Encode text to Base64 or decode Base64 back into readable UTF-8 text directly in your browser.

Generate one or many UUID v4 values instantly with copy controls and case options.

Convert colors between HEX, RGB, and HSL with a live swatch preview and quick copy actions.

Generate customizable lorem ipsum placeholder text by paragraph count and word length in seconds.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly in your browser.

Convert Unix timestamps to readable dates and convert dates back to epoch seconds or milliseconds.

Encode or decode URL components and full URLs with percent-encoding tools that run entirely in your browser.

Convert text between uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more instantly.

Test regular expressions against sample text, inspect matches, and review capture groups with live highlighting.

Compare two text blocks line by line and review added, removed, and unchanged lines in a clear diff view.

Convert Markdown into clean HTML with live source output and rendered preview in your browser.

Encode special characters as HTML entities or decode entity strings back into readable text instantly.

Generate Mandelbrot and Julia set fractals with zoom controls, color themes, and PNG download right in your browser.

Create harmonious five-color palettes from any base color using complementary, analogous, triadic, and other color theory rules.

Format book, journal article, website, and video citations in MLA 9 or APA 7 style instantly.

Resize images to exact dimensions, keep aspect ratio when needed, and export JPEG, PNG, or WebP files in your browser.

Estimate your due date, gestational age, trimester, conception date, and pregnancy progress from your LMP.

See how inflation changes future buying power with year-by-year projections and a visual purchasing power chart.

Convert uploaded images into plain text or colored ASCII art directly in your browser.

Convert temperatures between Celsius, Fahrenheit, and Kelvin with live updates and helpful reference formulas.

Switch between a lap-enabled stopwatch and a countdown timer with presets and a browser-generated alarm.

Generate creative username ideas for social accounts, gamertags, and brand-new handles in one click.

Create memorable XKCD-style passphrases with adjustable word counts, separators, and strength estimates.

Estimate monthly mortgage payments, total interest, loan-to-value, and year-by-year amortization.

Handle percentage-of, reverse percentage, percentage change, and increase or decrease calculations instantly.

Convert common units across length, weight, temperature, volume, area, speed, time, and data categories.

Calculate body mass index in metric or imperial units and review the matching BMI category and scale.

Calculate exact age, total days lived, next birthday countdown, zodiac details, and more from a birth date.

Calculate restaurant tips, total bill cost, and per-person splits with preset percentages and a live comparison table.

Find sale prices after one or more stacked discounts, calculate total savings, and optionally apply sales tax.

Simplify aspect ratios, calculate matching dimensions, and compare common video, photo, and screen formats.

Detect your current screen size, browser window dimensions, DPR, color depth, orientation, and retina status.

Check your public IP address, IPv4 or IPv6 availability, and location details such as city, ISP, and timezone.

Convert plain text to binary and binary back to text while also viewing hex, octal, and decimal values.

Convert Arabic numbers to Roman numerals and validate Roman numeral input from I to MMMCMXCIX.

Convert numbers between binary, octal, decimal, hexadecimal, and custom bases up to base 36.

Minify CSS for production or beautify stylesheets into a readable format directly in your browser.

Beautify messy JavaScript snippets or minify them into a compact one-line version with adjustable indentation.

Parse five-field cron schedules into human-readable text, explore presets, and preview the next execution times.

Decode JWT headers and payloads, inspect token claims, and review signature bytes without sending data anywhere.

Convert YAML to JSON or turn JSON back into YAML with inline validation for common configuration structures.

Format SQL queries into readable clauses, uppercase keywords, or minify statements for compact output.

Search common HTTP response codes, filter by category, and expand each status for details and practical use cases.

Convert Unix file permissions between numeric and symbolic forms while generating a ready-to-copy chmod command.