Free online converters

Converts a string into its hexadecimal byte representation.

Converts TOML to JSON in a side-by-side playground.

Exchange rate converter covering 32 currencies.

Rewrites non-ASCII characters as Unicode escape sequences.

Turns hexadecimal byte strings into raw data.

Converts JSON into YAML.

Parses a date and time string and reports it in a chosen format and time zone.

Encodes data as Base32 text.

Encodes data using the Base58 alphabet used by Bitcoin-style addresses.

Converts data to binary digits.

Writes data out as hexadecimal bytes with a delimiter of your choice.

Converts text to Morse code with a chosen delimiter format.

Rewrites a date string from one format and time zone to another.

Converts YAML into JSON.

CC0 unit converter covering 624 units across 28 types.

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

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.