Base64 Encoder/Decoder
Plain Text Input
0 charactersBase64 Output
No encoding result
Enter some text to see the encoded result here.
About Base64 Encoder/Decoder
Our free online Base64 Encoder and Decoder helps you convert text to Base64 encoding and decode Base64 strings back to plain text. Essential for working with data URIs, email attachments, API payloads, and any scenario where binary data needs to be represented as text.
Key Features
Encode & Decode
Convert text to Base64 or decode Base64 back to text.
Real-time Processing
See results instantly as you type.
UTF-8 Support
Properly handles Unicode characters and special symbols.
100% Client-side
All encoding/decoding happens in your browser - your data stays private.
Copy & Download
One-click copy or download results as a file.
Large Text Support
Handle large amounts of text efficiently.
How to Use
- 1Choose 'Encode' to convert text to Base64, or 'Decode' for the reverse.
- 2Enter or paste your text in the input area.
- 3The result appears instantly in the output area.
- 4Copy the result or download it as a file.
Pro Tips
- 💡Base64 increases data size by ~33% - keep this in mind for large files.
- 💡Data URIs use Base64: data:image/png;base64,iVBORw0...
- 💡Base64 is encoding, not encryption - don't use it for security.
- 💡URL-safe Base64 replaces + with - and / with _ for use in URLs.