Base64 Encode
Encode text to Base64.
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Tool guide
Base64 Encode: how it works
Practical information to understand the result and use this tool correctly.
About Base64 Encode
Base64 represents binary or text data using a 64-character alphabet so it can travel safely in JSON, URLs, and text protocols.
This encoder converts your input to Base64 locally. Decoding is available as a separate tool when you need the reverse operation.
Base64 is encoding, not encryption: anyone can decode it. Do not treat it as a way to hide secrets.
How to use it
- 1Paste the text to encode.
- 2Copy the Base64 output.
- 3Use it in headers, data URLs, or APIs as needed.
Frequently asked questions
- Why does Base64 output look longer?
- Encoding expands size by roughly 33% because every 3 bytes become 4 characters.
- Is Base64 secure?
- No. It is reversible encoding. Use proper encryption or hashing when you need secrecy or integrity.