Base64 Encoder
Encode any text, including Unicode characters and emojis, to Base64 format instantly. Free online Base64 encoder — paste text, click Encode, copy result. Nothing uploaded.
No server uploadsProcessed locally in your browserYour files never leave your device
Frequently Asked Questions
What does Base64 encoding do?
Base64 encoding converts text or binary data into a string of 64 safe ASCII characters. It is used in email attachments, data URIs, JWT tokens, and HTTP Basic Auth.
How do I encode text to Base64?
Paste your text into the input and click Encode. The Base64 string appears in the output — ready to copy.
Does this encoder support Unicode?
Yes. It uses TextEncoder internally, so all characters including emojis, Chinese, Arabic, and other scripts are handled correctly.