Free Base64 Encoder & Decoder
Encode and decode Base64 strings instantly. No signup required.
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How it works
1.
Enter Text
Paste your text or Base64 string.
2.
Choose Mode
Select Encode or Decode.
3.
Get Result
Copy the encoded or decoded output.
Common use cases
→
API Authentication
Encode credentials for Basic Auth headers.
→
Data URLs
Encode images or files as data URLs.
→
Email Attachments
Decode Base64-encoded email attachments.
→
URL Parameters
Encode binary data for URL transmission.
Frequently asked questions
What is Base64?
Base64 is an encoding scheme that converts binary data into ASCII text, commonly used in web APIs and email.
Is my data stored?
No. All encoding/decoding happens in your browser.
Can I encode files?
This tool encodes text only. For files, use a file-to-Base64 converter.