Base64 Encoder and Decoder

Encode plain text to Base64 and decode Base64 back to Unicode text directly in your browser.

Plain text
Paste or type any UTF-8 text, including emoji and non-Latin characters.
Base64 output
Edit the Base64 text directly to decode it back into plain text.

What is Base64?

Base64 is useful when a text-based channel needs to carry binary-friendly payloads, such as email bodies, JSON blobs, or small data URLs. It is an encoding layer, not a security layer.

When to use it

  • Quick debugging when an API returns or expects Base64 strings.
  • Converting browser text into a safe transport format for logs or payloads.
  • Checking whether a pasted Base64 blob decodes into the content you expect.

What to keep in mind

  • Base64 increases size by roughly one third.
  • It does not encrypt or hide the original value.
  • Invalid padding or broken copy-paste usually shows up as a decode error.