Base64 Encode
Encode text to Base64
Base64 encode is a free online tool that converts text or binary data into Base64 encoding. Base64 is widely used in APIs, data URIs, email attachments, and anywhere you need to represent binary data as ASCII text. Encoding to Base64 is a common step when sending or storing data in JSON, XML, or headers. This Base64 encoder runs entirely in your browser. Paste or type your input, and get the Base64 string instantly. No data is sent to any server, so you can encode sensitive strings safely. There is no sign-up or API key required. The tool is useful for developers working with APIs, authentication, or file handling. You can encode plain text, URLs, or small binary payloads. For decoding Base64 back to text, use our Base64 decode tool. Both are part of the Encode / Decode category, which also includes URL encode/decode, HTML encode/decode, JWT debugger, and binary/hex converters.
How it works
- 1
Enter text or data
Paste or type the text or data you want to encode into Base64 in the input field.
- 2
Encode to Base64
The tool converts your input to Base64 encoding instantly. Encoding happens in your browser.
- 3
Copy result
Copy the Base64 string to your clipboard for use in APIs, data URIs, or your code.
Use cases
- Encoding strings for API payloads or headers
- Creating data URIs for images or small files
- Preparing data for storage or transmission
- Testing Base64 encoding in development
Why use this tool
- Free and instant; no sign-up.
- Runs in the browser; nothing is sent to servers.
- Simple interface; no configuration needed.
- Pairs with our Base64 decode tool for round-trip use.
FAQ
What is Base64 encode?
Base64 encode converts text or binary data into a Base64 string—a safe ASCII representation used in APIs, data URIs, and many protocols.
Is this Base64 encoder free?
Yes. It is a free online tool. No sign-up or API key is required.
Is my data sent to a server?
No. Encoding happens in your browser. We do not store or transmit your input or output.
Can I decode Base64 here?
Use our separate Base64 decode tool to convert Base64 back to text. Both tools are in the Encode / Decode category.
Why use Base64?
Base64 lets you represent binary or special characters as plain ASCII text, which is useful in JSON, XML, URLs, and email.
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