Convert text to Base64 format

Encode text or bytes as standard padded Base64.

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ToolBase64 Encode
Input
Output
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Preview

How it works

Bytes form 24-bit groups mapped to the standard alphabet, with = padding for a partial final group. Text passes through the selected byte encoding before conversion.

  • Padding preserves recoverable byte length.
  • The standard alphabet interoperates with MIME and HTTP Basic.

Worked example

Simple Text
Encode a greeting to Base64
Input
											Hello, World!
Output
												SGVsbG8sIFdvcmxkIQ==

When to use this

Basic Auth, MIME attachments, and binary fixtures encode Base64.

Edge cases

  • Unicode code points must become UTF-8 bytes first.
  • Canonical output keeps padding.
  • Standard characters are not automatically URL-safe.

References