Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable text instantly. Everything runs locally in your browser — fast, private and free.
Text input
Enter plain text to encode as Base64.
Result
Copy the encoded or decoded output.
Quick Base64 examples
What is Base64?
Base64 is a way to represent binary data as plain text. It uses a limited set of safe characters, which makes it useful in systems that need text-friendly data.
Common Base64 uses
Base64 is commonly used in APIs, email attachments, authentication tokens, data URLs, configuration files and web development workflows.
Base64 is not encryption
Base64 makes data easier to transport, but it does not protect it. Anyone can decode Base64 text back to its original form.
Common Base64 mistakes
Treating Base64 as encryption
Base64 is reversible. Do not use it to hide passwords, secrets or sensitive data.
Copying incomplete Base64 strings
Missing characters or broken padding can make decoding fail. Always copy the full encoded value.
Forgetting Unicode / UTF-8 text
Special characters and emoji need proper UTF-8 handling. This tool supports normal Unicode text.
Free online Base64 encoder and decoder
This Base64 tool lets you encode plain text into Base64 and decode Base64 back into readable text. It is useful for developers, testers, students and anyone working with web data.
The tool runs locally in your browser, so your text does not need to be uploaded to a server. This makes it useful for quick checks, examples and everyday developer work.
How Base64 encoding works
Base64 converts data into a text-safe format using a set of 64 characters. This makes it easier to send binary or structured data through systems that expect text. The encoded output is usually longer than the original input.
Base64 Encoder / Decoder FAQ
What is Base64 used for?
Base64 is often used to encode binary data or structured data into text for APIs, emails, data URLs, tokens and web development.
Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode it if they have the Base64 string.
Can I decode Base64 back to text?
Yes. Paste a Base64 string, choose Decode, and the tool will convert it back to readable text when possible.
Why does Base64 sometimes end with =?
The equals sign is padding. It helps make the encoded data fit the expected Base64 block size.
Does this tool support UTF-8?
Yes. The tool supports common Unicode and UTF-8 text, including special characters.
Is my input uploaded?
No. The conversion happens in your browser.