Converters & Encoders

Convert and encode between formats and units.

Convert across 75+ categories — length, weight, temperature, data, and more.

Convert CSV to JSON and back — quoted fields, custom delimiters, and header rows.

Convert numbers to Roman numerals and back — 1 to 3999, both directions.

Convert text to Base64 and back, with full Unicode support.

Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text.

Percent-encode text for URLs and decode it back.

Current epoch time and conversion between timestamps and dates.

Encode an image as a Base64 data URI, CSS, HTML, or Markdown.

Other categories