All Tools

Convert a 10-digit ISBN to its 13-digit form or back, recomputing the check digit automatically. Free, instant, browser-based.

Encode text to Base64 or decode Base64 back to plain text, instantly, entirely in your browser.

Convert CSV to JSON or JSON to CSV, instantly and entirely in your browser, with proper handling of quoted fields, commas, and custom delimiters.

Pick a color and instantly see its HEX, RGB, and HSL values, entirely in your browser.

Escape special characters to HTML entities, or decode HTML entities back to plain text, for safely embedding text in HTML.

Convert images between PNG, JPEG, and WebP formats, entirely in your browser — no upload required.

Convert JSON to TypeScript interfaces, a Zod schema, or Go structs, with optional and nullable fields inferred from your data. Runs in your browser.

Convert JSON to YAML or YAML to JSON, instantly and entirely in your browser, with clear error messages when the input isn't valid.

Convert a number between binary, octal, decimal, and hexadecimal at once — paste one value and see all four bases side by side.

Convert between Unix timestamps and human-readable dates, in UTC and your local timezone, instantly in your browser.

Convert XML to JSON or JSON to XML, instantly and entirely in your browser, with a clear, predictable mapping between attributes, text, and repeated elements.

Convert curl commands to JavaScript fetch, Axios, Python requests, or Go code, including headers, JSON bodies, forms, and auth. Runs in your browser.

Convert a salary between hourly, daily, weekly, monthly, and annual figures based on your work schedule.

Convert images to and from AVIF — a modern, royalty-free format that beats JPEG and WebP on file size at the same quality.

Convert HEIC and HEIF photos from an iPhone or iPad into JPEG, PNG, or WebP so they open anywhere.

Convert an Excel workbook (.xls or .xlsx) to PDF — free, fast, nothing stored.

Convert JPG, PNG, WebP, and GIF images into a single PDF in your browser, with page size, orientation, and margins. Free, and nothing is uploaded.

Convert PDF pages to JPG or PNG images at screen, standard, or print resolution. Pick pages and download a ZIP. Runs in your browser with no upload.

Convert a PDF into an editable Word (.docx) document — free, fast, nothing stored.

Convert a PowerPoint presentation (.ppt or .pptx) to PDF — free, fast, nothing stored.

Convert a Word document (.doc or .docx) to PDF — free, fast, nothing stored.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more — instantly, entirely in your browser.

Convert between square meters, square feet, acres, hectares, and other area units instantly. Free, accurate, browser-based.

Convert between bits, bytes, KB, MB, GB, TB, and their binary (KiB/MiB/GiB) equivalents instantly. Free, accurate, browser-based.

Convert between kilometers, meters, miles, feet, inches, and other length units instantly. Free, accurate, runs in your browser.

Convert a number into its written-out English words, in international (million/billion) or Indian (lakh/crore) numbering.

Convert numbers to Roman numerals or Roman numerals back to numbers, for values from 1 to 3999. Free, instant, browser-based.

Convert between km/h, mph, m/s, and knots instantly. Free speed and velocity converter, runs entirely in your browser.

Convert between Celsius, Fahrenheit, and Kelvin instantly. Free temperature converter that runs entirely in your browser.

Convert a date and time from one time zone to another, using each zone's current UTC offset. Free, instant, runs in your browser.

Convert between length, weight, area, volume, speed, data storage, and temperature units, all from one page. Free and instant.

Convert between liters, milliliters, gallons, cups, and other volume units instantly. Free, accurate, runs entirely in your browser.

Convert between kilograms, grams, pounds, ounces, and other weight units instantly. Free, accurate, runs entirely in your browser.

Convert written-out English number words back into digits — supports both international and Indian (lakh/crore) numbering.