What does this tool do?
| Direct answer | Base64 Encode converts UTF-8 text bytes into the 64-character Base64 alphabet for safe transport. |
| Key fact | Base64 (RFC 4648) encodes 3 bytes into 4 characters — output is always a multiple of 4 with = padding. |
| Processing | Runs locally in your browser; no data is sent to a server. |
How to use
- Paste or type text into the input.
- Click Encode to Base64.
- Copy the encoded string.
Example
Input
Hello, world! 🌍
Output
SGVsbG8sIHdvcmxkISA8J+KfqPCfkYI=
Who is this for?
This tool was built for people who need a fast answer in the browser — no install, no account, no data leaving the device.
Developers verifying file checksums, DevOps engineers generating secrets, and security students learning encoding basics — all without uploading data to a server.
Frequently asked questions
Is Base64 encryption?
No. Base64 is an encoding, not encryption — anyone can decode it. Never use it to protect secrets.
Does it support emoji and Chinese?
Yes. Input is UTF-8 encoded first, so any Unicode text round-trips exactly.
Why does output end with =?
Padding characters align the output length to a multiple of 4.