Skip to main content

Base64 Encoder and Decoder Online

Encode plain text to Base64 or decode Base64 back to text in seconds.

What is Base64?

Base64 is a text format that represents binary data using letters, numbers, and a few symbols. It is commonly used when systems need to safely transmit data as plain text.

How to Use This Tool

  1. Paste plain text or Base64 content into the input box.
  2. Click Encode to Base64 to convert text to Base64.
  3. Click Decode from Base64 to convert Base64 back into readable text.
  4. Use Copy Output to copy the result, or Clear to reset both boxes.

Example

Plain text:

SmartFlexa tools are fast and easy to use.

Encoded:

U21hcnRGbGV4YSB0b29scyBhcmUgZmFzdCBhbmQgZWFzeSB0byB1c2Uu

Decoded:

SmartFlexa tools are fast and easy to use.

FAQ

What is Base64 used for?
It is used to safely transport text-like representations of binary data in APIs, email attachments, data URLs, and config files.
Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode it back to the original value.
Is this tool free?
Yes. SmartFlexa’s Base64 tool is free to use with no signup.
Is my data secure?
Processing happens in your browser for this tool. Your input is not sent to a server.