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File format and unit converters — 17 free tools, all processing client-side for maximum privacy. No sign-up, no limits, no data collection.
Transform data between formats instantly. Our Converters handle CSV to JSON, YAML to JSON, Markdown to HTML, unit conversions, Roman numerals, binary, and more. Every conversion happens client-side for maximum speed and privacy.
Data conversion is a daily necessity for developers, data analysts, and content creators who work across multiple platforms and file formats. CodelithLabs Converter Tools provide instant, client-side format transformations that eliminate the need for command-line scripts or cloud services that might cache your data.
Our CSV-to-JSON and JSON-to-CSV converters handle complex nested structures, quoted fields, and multi-line values with automatic delimiter detection. The YAML-to-JSON and JSON-to-YAML tools support full YAML spec compatibility including anchors and aliases. Markdown-to-HTML conversion renders GitHub Flavored Markdown with syntax highlighting, tables, and task lists — perfect for previewing README files before pushing to repositories.
Beyond file formats, our unit converters cover length, weight, temperature, speed, area, volume, and digital storage with real-time bidirectional conversion. The Binary Converter handles binary, octal, decimal, and hexadecimal number systems. The Color Converter transforms between HEX, RGB, HSL, and CMYK with a live color preview. Coordinate Converter translates between decimal degrees (DD), degrees-minutes-seconds (DMS), and UTM formats for GIS applications. Roman Numeral conversion is available for historical research and educational use. Every conversion runs instantly in your browser with zero data transmission.
Convert Markdown text to clean, ready-to-use HTML code instantly. Supports headings, links, lists, code blocks, and inline formatting — no server required.
Transform CSV data into JSON format instantly.
Convert JSON arrays to CSV format for spreadsheets.
Convert YAML configuration to JSON format.
Convert Unix timestamps to human-readable dates and vice versa.
Convert between length, weight, temperature, area, volume, speed, and data units instantly. Covers metric, imperial, and scientific systems with real-time results.
Convert JSON data to YAML format for configuration files.
Convert between numbers and Roman numerals (I, V, X, L, C, D, M).
Convert text to binary and binary to text.
Pick colors and convert between HEX, RGB, HSL, CMYK with shades and contrast preview.
Convert PDF documents to high-quality PNG/JPG images page by page.
Convert between Celsius, Fahrenheit, and Kelvin temperatures.
Convert speed between km/h, mph, m/s, knots, and more.
Convert weight between kg, lbs, ounces, grams, and stones.
Convert length between meters, feet, inches, miles, and kilometers.
Convert between bytes, KB, MB, GB, TB with binary and decimal units.
Convert numbers to written words in English and Hindi for cheques and documents.