Converters
Units, bases, and format conversions.
Converters turn one unit or format into another in a single step: length, weight and temperature units, number bases like binary, decimal and hexadecimal, or data formats you paste in and get back transformed. They are built for students and engineers converting measurements, developers switching between number bases, and anyone who just needs a quick, reliable answer without doing the math by hand. Reversible pairs are handled as one strong two-way tool — type in either side and the other updates instantly — so you never have to hunt for the 'reverse' version. Everything runs in your browser with no uploads and no sign-up. Free, instant, and built to give you a copy-ready result in seconds.
19 tools
All tools → Area Converter Type an area into any unit and instantly read it in every other unit at once — metric, imperial, acres, hectares, and East Asian property units (mu, tsubo, ping) on one live page. ASCII Converter Convert text to ASCII codes and back, in decimal, hex, binary, or octal, all in one private two-way tool. Bytes to KB MB GB Converter Convert a data size between bytes, KB, MB, GB, TB, and PB instantly — with a binary (1024) vs decimal (1000) switch that explains why your drives look smaller than the label. Celsius To Fahrenheit Type a temperature in either box and instantly read it in both Celsius and Fahrenheit — with a ready-made everyday reference table so you don't even have to type for common temperatures. Cm to Inches Converter Convert centimeters, decimal inches, or common inch fractions live, with decimal, tape-measure fraction, and feet-plus-inches results. Delete PDF Pages Remove specific pages or page ranges from a PDF entirely in your browser — your file is never uploaded. JPG to PDF Turn JPG, PNG and other images into one tidy PDF — done entirely in your browser, so your photos are never uploaded. Kg to Lbs Type a kilogram or pound value and instantly see the exact conversion both ways, with a ready-made reference table. Km to Miles Converter Type a distance in kilometers or miles and instantly read it in the other unit, both directions, on one page. Merge PDF Combine several PDFs into one ordered document — entirely in your browser, so your files never leave your device. Morse Code Translator Translate text to Morse code and Morse code back to text on one screen, then play it as audible beeps and a flashing light. Number Base Converter Type a number in any base (binary, octal, decimal, hex, or any base 2-36) and instantly see it in every other base, all on one screen. PDF to JPG Turn each page of a PDF into a JPG or PNG image — rendered right in your browser, so your file is never uploaded. PDF Tools A small, themed set of free PDF tools that do their whole job inside your browser — your files never leave your device, no upload, no signup, no watermark. Reorder PDF Pages Rearrange the pages of a PDF into any order — drag them or type the new sequence, then download — all in your browser. Roman Numeral Converter Convert any number to Roman numerals and back instantly, both directions, including years and dates, right in your browser. Rotate PDF Turn sideways or upside-down PDF pages the right way up — all pages at once or page by page — entirely in your browser. Split PDF Extract page ranges from a PDF or split it into one file per page, entirely in your browser — your file is never uploaded. Text To Slug Turn any title or text into a clean, lowercase, URL-safe slug in one second.