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Base64 Encode/Decode
Instant Base64 encoding and decoding. Works entirely in your browser - your data never leaves your device.
Free Tool
Client-side
UTF-8
Usage Examples
Encoding
Hello World↓
SGVsbG8gV29ybGQ=Decoding
YWRtaW46cGFzc3dvcmQ=↓
admin:passwordAbout Base64
What is Base64?
Base64 is a binary-to-text encoding scheme using 64 ASCII characters. Often used for data transfer in URLs, email, and JSON.
Use Cases
- • HTTP Basic Auth
- • Data URLs (images)
- • JWT tokens
- • Email attachments (MIME)
- • API payloads
Privacy
All operations are performed in your browser. Data is never sent to a server.
Important
Base64 is encoding, NOT encryption. Do not use it to protect sensitive data.