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Base64 encode and decode

Base64 turns binary data into plain text using 64 safe characters, which is how images get embedded in CSS and tokens travel in headers. It is an encoding, not encryption: anyone can reverse it.

Base64

Input

hello world

Result

aGVsbG8gd29ybGQ=
Done in your browser. Nothing is sent anywhere.

How to use it

  1. Type or paste your text.
  2. Switch between Encode and Decode.
  3. Copy the result.

This tool is also built into Zest search, so you can type your question into the search box and get the same answer above the results.

Common questions

Is Base64 encryption?
No. It only changes the representation. Never use it to hide secrets.
What is URL-safe Base64?
A variant that uses - and _ instead of + and /, and often drops the = padding, so the result can sit in a URL.