Converters tools

    Move data between formats, encodings and notations.

    Date & time converter

    Convert between ISO 8601, Unix timestamps, RFC 7231, JS dates and more.

    Integer base converter

    Convert a number between binary, octal, decimal, hexadecimal and any base up to 64.

    Roman numeral converter

    Convert Arabic numbers to Roman numerals and back.

    Base64 string encoder / decoder

    Encode and decode text to and from Base64, with URL-safe support.

    Base64 file converter

    Turn any file into a Base64 data URI, or decode Base64 back into a file.

    Color converter

    Convert a color between HEX, RGB, HSL, HWB, LCH, CMYK and CSS names.

    Case converter

    Change text between camelCase, snake_case, kebab-case, Title Case and more.

    Text to NATO alphabet

    Spell text out using the NATO phonetic alphabet.

    Text to binary

    Convert text to its binary or hexadecimal ASCII representation and back.

    Text to Unicode

    Convert text to Unicode code points or HTML entities, and decode them again.

    YAML to JSON

    Convert a YAML document into formatted JSON.

    JSON to YAML

    Convert a JSON document into YAML.

    YAML to TOML

    Convert a YAML document into TOML.

    TOML to YAML

    Convert a TOML document into YAML.

    JSON to TOML

    Convert a JSON document into TOML.

    TOML to JSON

    Convert a TOML document into formatted JSON.

    XML to JSON

    Convert an XML document into JSON.

    JSON to XML

    Convert a JSON document into XML.

    Markdown to HTML

    Render Markdown to HTML and preview the result side by side.

    List converter

    Transform a list — split, prefix, suffix, sort, dedupe, reverse and join.

    Everything here runs on your machine

    These 20 converters tools are plain client-side JavaScript served as static files. There is no backend to receive what you paste, no account to create and no usage limit. Open your browser's network panel while you work and you will see the page load, then nothing else.