Free Online Converters - Convert Any File or Data Format
Pick the exact conversion you need. Each page runs the conversion entirely in your browser, so files and data never leave your device.
74 tools in this section
Convert JSON to CSV Online
Paste JSON data and instantly convert it to CSV format. Free online JSON to CSV converter with download support.
Convert JSON to YAML Online
Paste JSON and instantly get YAML output. Free online JSON to YAML converter with syntax highlighting and copy support.
Convert YAML to JSON Online
Paste YAML and instantly convert it to JSON. Free online YAML to JSON converter with validation and formatting.
Convert JSON to TypeScript Types Online
Generate TypeScript interfaces and types from JSON data automatically. Free online JSON to TypeScript converter.
Convert HTML to Markdown Online
Paste HTML and convert it to clean Markdown. Free online HTML to Markdown converter preserving links, images, and formatting.
Convert Tailwind CSS to Plain CSS Online
Paste Tailwind utility classes and get equivalent plain CSS. Free online Tailwind to CSS converter for quick reference.
Convert Text to Binary Online
Convert any text to binary code instantly. Free online text to binary converter with ASCII and UTF-8 support.
Convert Text to Morse Code Online
Translate text to Morse code dots and dashes instantly. Free online text to Morse code converter with audio playback.
Convert Morse Code to Text Online
Decode Morse code dots and dashes back to readable text. Free online Morse to text decoder with instant results.
Convert Image to Base64 Online
Upload an image and get its Base64 encoded string. Free online image to Base64 converter for embedding images in HTML and CSS.
Convert Colors Between HEX, RGB, HSL Online
Convert colors between HEX, RGB, HSL, and other formats instantly. Free online color converter with live preview.
Convert CSV to JSON Online
Upload or paste CSV data and convert it to JSON format instantly. Free online CSV to JSON converter with formatting options.
Convert Between Binary, Decimal, Hex, and Octal Online
Convert numbers between binary, decimal, hexadecimal, and octal bases. Free online number base converter.
CSV to JSON Converter - Free Online Tool
Upload or paste CSV data and convert it to a JSON array of objects. Free online CSV to JSON converter with delimiter options.
Convert XML to JSON Online
Paste XML data and convert it to JSON format instantly. Free online XML to JSON converter with formatting and validation.
Convert YAML to CSV Online
Transform YAML data into CSV spreadsheet format. Free online YAML to CSV converter with download support.
Convert Image Format Online (JPG, PNG, WebP, AVIF)
Convert images between JPG, PNG, WebP, and AVIF formats. Free online image format converter with quality control.
Convert SVG to PNG Online
Convert SVG vector images to PNG raster format with custom dimensions. Free online SVG to PNG converter.
Convert Currencies Online
Convert between world currencies with up-to-date exchange rates. Free online currency converter calculator.
Convert Text to ASCII Art Online
Transform any text into ASCII art with multiple font styles. Free online text to ASCII art generator.
Apply Image Effects & Filters Online
Apply blur, grayscale, sepia, brightness, and contrast filters to images. Free online image effects tool.
Convert CSS Units (px, rem, em, vh, vw) Online
Convert between CSS units like px, rem, em, vh, and vw. Free online CSS unit converter with base size settings.
Convert Unix Timestamps Online
Convert between Unix timestamps and human-readable dates. Free online timestamp converter with timezone support.
Convert Units Online (Length, Weight, Temperature)
Convert between length, weight, temperature, area, and volume units. Free online unit converter.
Convert HTML to JSX Online
Paste HTML and convert it to valid JSX for React. Free online HTML to JSX converter that handles className, style objects, and self-closing tags.
Convert JSON to XML Online
Paste JSON and convert it to XML format instantly. Free online JSON to XML converter with formatting and download.
Convert TOML to JSON Online
Paste TOML and convert it to JSON instantly. Free online TOML to JSON converter for Cargo.toml, pyproject.toml, and config files.
Convert Design Tokens Between CSS, SCSS, and JSON
Convert design tokens between CSS custom properties, SCSS variables, and JSON formats. Free online design token converter.
Convert Punycode to Unicode Domain Names Online
Encode and decode Punycode for internationalized domain names (IDN). Free online Punycode converter.
Convert Text Case Online - camelCase, snake_case, UPPERCASE
Convert text between camelCase, snake_case, PascalCase, UPPERCASE, lowercase, and more. Free online case converter.
Convert Word to PDF Online Free
Convert Word .docx documents to PDF online for free with no email and no watermark. Runs in your browser, your file is never uploaded.
Convert Resume to PDF Online Free
Turn your Word resume or CV into a clean PDF online for free. No email signup, no watermark, file never leaves your browser.
Convert HEX to HSL Online
Convert a HEX color to HSL online for free with a live preview. See RGB and HSL values at once, ideal for CSS hover and theme states.
Convert HEX to RGB Online
Convert a HEX color code to RGB online for free with a live preview. Get RGB and HSL values instantly for CSS and design tools.
Convert JSON to Excel Online
Convert JSON to a CSV file you can open in Excel or Google Sheets. Free online JSON to Excel converter, no signup, no upload.
Convert JSON Array to CSV Online
Convert a JSON array to CSV with one click. Free online JSON array to CSV converter that flattens nested objects, no upload required.
Convert PNG to Base64 Online
Convert a PNG image to a Base64 data URI for HTML or CSS. Free online PNG to Base64 encoder, processed in your browser with no upload.
Convert JPG to Base64 Online
Convert a JPG image to a Base64 data URI string. Free online JPG to Base64 encoder for embedding images in HTML, CSS, or email, no upload.
Convert Uppercase to Lowercase Online
Convert UPPERCASE text to lowercase instantly. Free online uppercase to lowercase converter, plus title case and sentence case, no signup.
Convert Text to Title Case Online
Convert text to Title Case with every word capitalized. Free online title case converter for headings and titles, no signup, no upload.
Convert Unix Timestamp to Date Online
Convert a Unix timestamp to a human-readable date in local time and UTC. Free online epoch to date converter for seconds and milliseconds.
Convert Epoch Time to Date Online
Convert epoch time to a readable date and back again. Free online epoch converter with seconds and milliseconds support, runs in your browser.
Convert Tailwind Class to CSS Online
Paste Tailwind utility classes and get the equivalent plain CSS. Free Tailwind class to CSS converter for learning and migration, no signup.
Convert CSV to Markdown Table Online
Paste CSV or spreadsheet data and convert it to a Markdown table. Free CSV to Markdown table generator for GitHub READMEs and docs, no signup.
Convert Decimal to Binary Online
Convert decimal numbers to binary instantly, plus octal and hexadecimal. Free decimal to binary converter that updates every base at once, no signup.
Convert Binary to Text Online
Paste binary code and translate it back to readable text. Free binary to text converter that accepts spaced or continuous binary, no signup.
Convert px to rem Online
Convert pixels to rem with a custom base font size. Free px to rem converter with a live conversion table, no signup.
Convert rem to px Online
Convert rem values to pixels against any base font size. Free rem to px converter with instant bidirectional results, no signup.
Convert px to em Online
Convert pixels to em relative to a parent or base font size. Free px to em converter for responsive type and breakpoints, no signup.
Convert JSON to a TypeScript Interface Online
Turn a JSON object or API response into TypeScript interfaces. Free JSON to interface generator that infers types, no signup.
Convert Meters to Feet Online
Convert meters to feet with exact factors. Free meters to feet converter covering length units both ways, no signup.
Convert Celsius to Fahrenheit Online
Convert Celsius to Fahrenheit using the exact formula. Free temperature converter that also goes back to Celsius, no signup.
Convert HTML Table to Markdown Online
Paste an HTML table and convert it to a clean Markdown table. Free online HTML table to Markdown converter for GitHub and docs.
Convert HTML to a GitHub README Online
Paste webpage HTML and get GitHub Flavored Markdown for your README. Free online HTML to Markdown converter for README files.
Convert Excel CSV to JSON Online
Export a sheet as CSV and convert it to a JSON array of objects. Free online Excel CSV to JSON converter with delimiter options.
Convert XML to JSON Array Online
Paste XML and convert repeated elements into a clean JSON array. Free online XML to JSON converter that keeps attributes and runs in your browser.
Convert SOAP or RSS XML Response to JSON
Paste a SOAP envelope or RSS feed and convert it to JSON instantly. Free online XML to JSON converter for API responses, fully in your browser.
Convert YAML to CSV for Excel and Google Sheets
Paste a YAML array of objects and convert it to CSV for Excel or Google Sheets. Free online YAML to CSV converter with header detection.
Convert WebP to PNG Online
Upload a WebP image and convert it to PNG with transparency preserved. Free online WebP to PNG converter that runs entirely in your browser.
Convert PNG to WebP Online
Upload a PNG and convert it to a smaller WebP file for faster sites. Free online PNG to WebP converter with quality control, fully in browser.
Convert SVG to PNG with Transparent Background
Paste SVG code or upload a file and export a PNG with a transparent background at any size. Free online SVG to PNG converter in your browser.
Convert SVG to PNG at High Resolution
Export SVG to a high resolution PNG like 1024x1024 for app icons and retina screens. Free online SVG to PNG converter with custom dimensions.
Convert USD to INR Online
Convert US Dollars to Indian Rupees with up-to-date exchange rates. Free online USD to INR currency converter with reverse conversion.
Convert EUR to GBP Online
Convert Euros to British Pounds with current exchange rates. Free online EUR to GBP currency converter with quick reverse conversion.
Convert HTML to React JSX Online
Convert HTML markup to valid React JSX online for free. Rewrites class to className, closes void tags, and converts inline styles, no signup.
Convert a Static HTML Page to a React Component
Turn a static HTML page or template into a React JSX component online. Free converter for migrating HTML, Bootstrap, or Tailwind markup, no upload.
JSON to XML Converter - Free Online Tool
Convert JSON data to well-formed XML online for free. Set a custom root element, toggle the XML declaration, and download the result, no upload.
Convert Figma Tokens to CSS Variables
Convert Figma design tokens to CSS custom properties online for free. Paste your Tokens Studio JSON and export :root CSS variables with color swatches.
Convert Figma Tokens to a Tailwind Config
Convert Figma design tokens to a Tailwind CSS config online for free. Paste your Tokens Studio JSON and export a ready-to-use Tailwind theme, no signup.
Convert Cargo.toml to JSON Online
Paste a Rust Cargo.toml file and instantly convert it to JSON. Free online converter that runs entirely in your browser with no upload.
Convert pyproject.toml to JSON Online
Convert a Python pyproject.toml file to JSON online for free. Handles tables, dotted keys, and arrays with no data leaving your browser.
Convert JSON to TOML Online
Paste JSON and instantly generate clean TOML config. Free bidirectional converter with section headers and correct value types, all in your browser.
Convert HTML to PDF Online Free
Paste HTML with CSS and download a clean PDF. Set page size, orientation, and margins. No upload, no watermark, runs entirely in your browser.
Add a Watermark to a PDF Online Free
Stamp text or a logo onto a PDF with adjustable opacity, rotation, and position. Watermark all pages or a custom range. No upload, runs in your browser.
Full Tool Pages
About These Tools
Every tool in this section is free and runs entirely in your browser on ToolBox. There are no uploads, no accounts, and no usage limits, so your files and data stay on your own device. Browse the full tool directory for everything else.