Free Base64 Encoder & Decoder
Encode text into Base64 or decode Base64 into readable UTF-8 text. Supports Thai and other languages, with conversion performed directly in your browser.
How to use the Base64 tool
- Enter or paste text into the input box.
- Choose Encode to Base64 to convert text.
- Paste Base64 and choose Decode Base64 to restore the text.
- Use Copy result to copy the output.
How Base64 encoding works
Base64 represents data using 64 printable ASCII characters. It converts groups of bytes into text; it does not compress or encrypt the original data. Padding characters may appear at the end of an encoded result.
What is Base64?
Base64 is a way to represent binary data using a set of text characters. It is commonly used in data transfer, email, and web development.
Important: Base64 is encoding, not encryption. It does not protect passwords or other sensitive information.
Frequently asked questions
Is this Base64 tool free?
Yes. You can encode and decode text for free without creating an account.
Does it support Thai and other languages?
Yes. The tool uses UTF-8, so it supports Thai, English, and other Unicode text.
Are my texts uploaded to a server?
The conversion is performed locally in your browser. This page does not send your input to a conversion server.
Is Base64 secure encryption?
No. Anyone can decode Base64. Do not use it to protect confidential information.
Why does Base64 output sometimes end with an equals sign?
The equals sign is padding used when the input byte length does not fit evenly into Base64 conversion groups.
Can I encode Unicode text?
Yes. This tool converts text to UTF-8 bytes before encoding, so it supports Thai and other Unicode characters.