Free online converters

Converts JSON to CSV in the browser and states that data is not sent to a server.

Converts pasted or uploaded CSV into JSON.

Converts epoch seconds, epoch milliseconds or date strings to and from readable dates.

Turns pasted JSON into CSV.

Turns pasted JSON into tab-separated values.

Converts JSON to YAML.

Converts numbers between binary, decimal, hexadecimal and other bases.

Creates a QR code from text in three sizes, with an optional centre logo and PNG download.

Paste an epoch number to see the calendar date and time it stands for.

Converts tab-separated values into structured JSON.

Converts XML into JSON.

Converts YAML into JSON.

Batch converts images between formats, up to 50 files, with optional background removal.

Converts between metres, kilometres, feet and miles with a live result in the browser.

Switches images between JPG, PNG, WebP and GIF locally, with no uploads.

Converts between CSV and JSON, handling TSV, semicolons and quoted fields, without leaving the browser.

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.