Free Online Converterfor Units, Images, Data & More

UConvertX is a comprehensive free online converter that brings together over 220 tools across 9 major categories — all running entirely in your browser with zero uploads and complete privacy. Whether you are a student converting units for homework, a developer transforming data formats, a designer picking the perfect color, or anyone who simply needs to get a file from one format to another, UConvertX delivers instant results with no signup, no ads, and no file-size limits. Below is a closer look at every category of tools available on the platform.

Unit Converter — Metric, Imperial & Beyond

Our unit converter covers every everyday and scientific measurement you can think of. Quickly convert cm to inches, kg to lbs, Celsius to Fahrenheit, km to miles, liters to gallons, and many more. Categories include length, weight, temperature, speed, area, volume, pressure, energy, fuel economy, and cooking measurements. Need to convert tablespoons to milliliters for a recipe, or pascals to psi for an engineering report? Just type a value and the result appears instantly — no buttons to click, no page reloads. All conversions use precise, up-to-date factors so you can trust the numbers in any professional or academic context.

Image Converter & Editor

Convert and optimize images without installing any software. Our image converter supports PNG to JPG, JPG to WebP, HEIC to JPG, SVG to PNG, GIF to MP4, BMP to PNG, and dozens of other format pairs. Beyond format conversion, you can compress images without losing quality, resize to exact dimensions, crop to custom aspect ratios, and strip EXIF metadata for privacy. Batch processing lets you drag and drop multiple files at once and download them all in a single ZIP. Every operation happens client-side, so your photos never leave your device — ideal for sensitive or personal images.

PDF Tools — Merge, Split, Compress & Convert

Handle all your PDF tasks in one place. Merge PDF files into a single document, split PDF pages into separate files, or compress PDF size for easy sharing via email. Rotate pages, add watermarks, and reorder sheets with a simple drag-and-drop interface. Need to extract content? Convert PDF to PNG, PDF to JPG, PDF to text, or even PDF to Word. Going the other direction, turn images, HTML pages, or Markdown documents into polished PDFs. All processing is done locally in your browser — your confidential contracts and reports stay private.

Data Format Converter for Developers

Developers and data professionals rely on our data format converter to transform structured data in seconds. Convert JSON to CSV, YAML to JSON, XML to JSON, CSV to JSON, JSON to TOML, and every other combination of JSON, CSV, XML, YAML, and TOML. Our code-generation tools go further: paste a JSON payload and instantly generate a TypeScript interface, Java class, Python dataclass, Go struct, Rust struct, Swift Codable, or C# model. Syntax highlighting, auto-formatting, and error detection make it easy to spot issues before you paste the output into your project.

Text Tools & Markup Converters

Transform and analyze text with a full suite of text tools. Change case between camelCase, snake_case, kebab-case, PascalCase, UPPER CASE, and lower case in one click. Encode or decode URL strings, HTML entities, and Unicode escape sequences. Convert Markdown to HTML with live preview, generate URL-friendly slugs, translate text to Morse code, or apply ROT13 cipher. Additional utilities include word and character counters, text diff comparison, line sorting and deduplication, and Lorem Ipsum generation — everything a writer or developer needs to wrangle text efficiently.

Encoding & Cryptography

Encode, decode, and hash data with our encoding and cryptography toolkit.Base64 encode and decode strings or files, convert between Hex and text, binary and text, ASCII, UTF-8, and Punycode. Decode JWT tokens to inspect headers and payloads without any external library. Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for file integrity checks. Handle URI component encoding for safe query strings, or convert between different character encodings. Every tool runs entirely in the browser, so sensitive tokens and secrets are never transmitted over the network.

Color Converter

Designers and front-end developers use our color converter to move seamlessly between color models. Convert HEX to RGB, RGB to HEX, HSL to HEX, CMYK to RGB, and more with real-time visual previews. Pick any color with the built-in color picker, fine-tune hue, saturation, and lightness sliders, and copy the result in your preferred format with one click. Whether you are matching brand guidelines in a CSS stylesheet or preparing print-ready CMYK values, the converter gives you pixel-perfect accuracy across every color space.

Date & Time Tools

Work with dates and timestamps effortlessly. Our Unix timestamp converter translates epoch seconds to human-readable dates and back. Convert between UTC and local time, compare time zones side by side, and calculate the exact duration between two dates. Support for ISO 8601, RFC 2822, Julian dates, and custom format strings means you can handle any date representation your API or database throws at you. The epoch converter is a favorite among backend engineers debugging log files and scheduling systems.

Number System Converter

Convert numbers between any base with our number system converter. Translate decimal to binary, hex to decimal, octal to decimal, and any base from 2 to 36. Our Roman numeral converter handles values up to 3,999 in both directions. Whether you are studying computer science, debugging memory addresses, or just curious about how numbers work in different bases, the converter provides instant, accurate results with step-by-step breakdowns to help you learn along the way.

Every tool on UConvertX is free, requires no account, and works on any device — desktop, tablet, or mobile. Start converting now and discover why thousands of users choose UConvertX as their go-to conversion toolkit every day.