Free online converters

Set of unit converters covering length, area, volume, weight and more.

Changes between kitchen units for weight, liquid and dry volume, length and temperature.

Converts amounts between currencies using daily European Central Bank rates.

Converts between 24-hour military time and 12-hour clock time.

Ad-free converter for fiat currencies and cryptocurrencies that works offline as a PWA.

Looks up air fryer temperature and cooking time for 16 common foods, with German and English labels.

Russian-language recipe scaler that recalculates ingredients by servings or by the weight of one ingredient.

Turns a file or image into a Base64 string, or turns Base64 text back into a downloadable file.

Encodes plain text to Base64 and decodes Base64 strings back to text.

Converts a date and time into formats such as ISO 8601, UTC, Unix timestamp and a locale string.

Converts an integer between decimal, hexadecimal, binary, octal and other bases.

Converts an array of JSON objects to CSV and detects the column headers automatically.

Converts JSON to YAML with a live two-pane view.

Turns Roman numerals such as MCMXCIV into ordinary integers and writes integers as numerals.

Converts temperatures between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, Reaumur and Romer.

Turns each character of a string into 8-bit binary digits and can reverse the process.

Converts text to Unicode code points and code points back to text.

Converts YAML to JSON with a live two-pane view.

Parses JSON and writes it out as TOML.

Converts a JSON document into XML.

Converts Markdown source into HTML markup.

Parses TOML and outputs JSON.

Parses TOML and outputs YAML.

Converts an XML document into JSON.