Converters — 30 Free Online Tools
30 free online converters. No signup required.
Convert between units, formats, encodings, and time zones. All common units, instant conversion with no server processing.
Aspect Ratio Calculator - Free Online Tool
Free aspect ratio calculator. Calculate aspect ratio from width and height, find missing dimensions, visual preview of 16:9, 4:3, 21:9 ratios. Social media presets for YouTube, Instagram, TikTok, Twitter. 100% private.
Base64 Encoder/Decoder - Encode Data
Free Base64 encoder and decoder. Encode text to Base64 and decode back. Works in your browser.
Base64 to Image Converter - Convert Base64 String to Image
Convert base64 strings and data URIs to viewable images. Supports PNG, JPG, WebP, GIF, BMP. 100% private, browser-based, no upload required.
Color Contrast Checker - WCAG AA AAA Accessibility Checker
Free WCAG color contrast checker. Check AA and AAA accessibility for text and background colors. Real-time ratio, live preview, pass/fail results. No signup.
Color Palette Generator - Create Harmonious Color Schemes
Free color palette generator. Create harmonious schemes with 7 harmony rules. Export as CSS, Tailwind, SCSS, JSON. Lock colors, WCAG checker. No signup.
Color Picker - HEX RGB HSL Converter
Pick colors and convert between HEX, RGB, and HSL formats with live preview and copy buttons.
CSS to Tailwind Converter - Free Online CSS to Utility Classes
Free CSS to Tailwind converter. Convert any CSS properties to Tailwind utility classes instantly. Supports 100+ properties including layout, flexbox, grid, typography, colors, borders. No signup, 100% private browser processing.
Excel Viewer & Converter - Free Online XLSX Viewer
Free online Excel viewer and converter. View XLSX, XLS, CSV files without Excel. Convert to JSON or CSV. 100% private, no upload, no signup.
File Opener - Open APK, RAR, DLL, DAT, BIN Online
Free online file opener. Detect, view, and extract 50+ file types (APK, RAR, ZIP, DLL, DAT, BIN, DOCX) using magic numbers. Browser-only, no upload, 100% private. AI cannot parse real binary files - we do.
Free Binary Hex Converter - Convert Binary to Decimal, HEX, ASCII
Free online binary hex converter. Convert between binary, decimal, hex, and ASCII text. Instant conversion, no upload needed. Developer tool for encoding.
Free Case Converter - Convert Text Case Online
Free online case converter. Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case, and more. Instant results.
Free Color Palette Extractor - Extract Colors from Image
Free online color palette extractor. Extract dominant colors from any image as HEX, RGB, HSL values. Download CSS variables or JSON. No signup required.
Free Markdown Editor & Preview - Live MD to HTML Converter
Free online markdown editor with live HTML preview. Write markdown, see rendered output instantly. GitHub Flavored Markdown, syntax highlighting, copy HTML. No signup, 100% private browser processing. AI cannot render live markdown previews - we do.
Free Time Zone Converter - World Clock
Free time zone converter. Convert time between cities instantly. See current time in multiple locations. No signup required.
Free Unit Converter - Convert Length, Weight, Temperature & More
Free online unit converter. Convert between length, weight, temperature, volume, speed, area, data, time, and pressure units instantly. No signup required.
Free URL Shortener - Shorten Long Links Instantly
Free URL shortener. Shorten long links instantly with no signup. Create clean, shareable short URLs for social media, messaging, and more.
HEIC to JPG Converter - Free iPhone Photo Converter
Free online HEIC to JPG converter. Convert iPhone HEIC photos to JPEG instantly. Batch convert unlimited photos. No upload, 100% private, browser-based.
HTML to Markdown Converter - Free Online Tool
Free HTML to Markdown converter. Paste HTML, get clean Markdown with customizable heading style, bullet markers, code blocks, and link format. 100% private browser processing.
Image Color Picker - Pick Colors from Photo Online
Free online image color picker. Upload any photo and click to pick exact pixel colors. Get HEX, RGB, HSL, CMYK values. No upload, 100% private browser processing. AI cannot extract pixel colors from images - we do.
Image to Base64 Converter - Encode Images Online
Free online image to base64 converter. Convert any image to base64 string, data URI, HTML img tag, or CSS url(). Supports PNG, JPG, WebP, GIF, SVG. 100% private, no upload.
JSON to CSV Converter - Bidirectional Online Data Converter
Free JSON to CSV converter and CSV to JSON online. Flatten nested objects, auto-detect input, table preview, export file. 100% private browser processing. AI cannot convert data reliably - we do.
JSON to XML Converter - Free Bidirectional Online Tool
Free JSON to XML converter and XML to JSON. Bidirectional with attribute handling, root element control, indentation options, and syntax validation. 100% private, no upload, no signup. AI cannot convert between JSON and XML reliably - we do.
JSON to YAML Converter - Free Bidirectional Tool
Free JSON to YAML converter and YAML to JSON. Bidirectional with indentation control, key sorting, syntax validation. 100% private, no upload, no signup.
Number to Words Converter - Spell Out Numbers in English
Free number to words converter. Convert any number to English words for checks, invoices, legal docs. Supports decimals, currency, lakh/crore. 100% accurate. No signup.
QR Code Reader - Decode QR Codes from Image & Camera
Free online QR Code Reader. Decode QR codes from images, screenshots, or live camera. Extract URLs, WiFi passwords, vCards instantly. 100% private browser processing. No signup. AI cannot scan real QR codes - we do.
Roman Numeral Converter - Free Online Number Tool
Free Roman numeral converter. Convert numbers to Roman numerals and back, including dates. Supports 1-3,999,999 with overline notation. 100% accurate, no signup.
SVG to PNG Converter - Free Online SVG Rasterizer
Free SVG to PNG converter. Rasterize SVG vectors to PNG, JPG, WebP with scale control, custom dimensions, background color. Paste SVG code or upload files. 100% browser-based, no upload, no signup. AI cannot rasterize SVG — we do.
Text Cleaner - Remove Line Breaks, Spaces & HTML Tags
Free online text cleaner. Remove line breaks, extra spaces, HTML tags, duplicate lines, and clean messy text with 20+ deterministic options. No signup, 100% private browser processing. AI cannot clean text deterministically - we do.
Timestamp Converter - Unix Time Conversion
Convert Unix timestamps to dates and dates to timestamps. Shows current timestamp updating in real-time.
URL Encoder/Decoder - Encode URLs Safely
Free URL encoder. Encode special characters in URLs for safe transmission.