HTML Encode / Decode

Escape or unescape &, <, >, quotes so markup stays literal.

Calculated Result

Formula: & < > " ' → HTML entities

About this calculator

Paste a snippet that must sit inside HTML. Encode before you embed it in a page. Decode when you copied entities from a view-source dump.

Formula& < > " ' ↔ HTML entities

Replace & < > " ' with named/numeric entities; decode reverses the same five.

Encode or decode UTF-8 text as RFC 4648 Base64.

Percent-encode or decode a URL component.

Beautify, minify, and validate JSON without sending it to a server.

Convert CSV tables to JSON objects and back.