Encode text to Base64 or decode Base64 strings back to plain text instantly. Free online Base64 encoder decoder. Works with Unicode and Tamil text. No login needed.
Encode & DecodeUnicode SupportTamil Text ReadyInstantFree
Input — text to encode, or Base64 to decode
Output
Quick reference
What it is
Base64 is a way to represent binary data as plain ASCII text — commonly used in APIs, email attachments, and data URLs.
How to use it
Type or paste your text in the input box
Click Encode to Base64 to convert it
To decode, paste a Base64 string and click Decode
Click Copy to grab the result
When you need this
Encoding binary data to pass through text-only systems
Storing images as data URLs in CSS or HTML
Passing data in API headers or query parameters
Decoding a Base64 token or attachment
Good to know
Base64 output is always about 33% longer than the input
Output ending with == or = is normal padding
Base64 is encoding not encryption — anyone can decode it
This tool supports Tamil and all Unicode characters correctly
What else we build
Tamil Brothers is an indie studio building games, Discord bots, and digital tools. All free.