What Base64 stores
Base64 represents binary data with printable characters. It is common in tokens, email bodies, data URLs, and protocol examples where raw bytes need a text-safe form.
Encoding utility
Base64 String and Binary Converter
Convert UTF-8 text to Base64, decode Base64 back to text, and inspect the bytes behind each transformation without sending data to a server.
- Runtime
- Browser
- Input
- Local
- Formats
- 3 views
Converter
Encode plain text into Base64 output.
Conversion mode
0 bytes
0 chars
Waiting for input.
Byte inspector
Inspect UTF-8 source bytes before Base64 encoding.
| Offset | Hex | Decimal | Binary | ASCII |
|---|---|---|---|---|
| Enter text or Base64 to inspect bytes. | ||||
Why padding appears
The equals sign fills the final group when the source byte count is not divisible by three. Some URL-safe formats remove padding and restore it during decoding.
UTF-8 and bytes
Text is encoded into UTF-8 bytes before Base64 conversion. The byte inspector shows the exact hexadecimal and binary values that the encoder sees.
Usage guide
How to use the Base64 converter
What this tool shows
It converts UTF-8 text to Base64, decodes Base64 back to text, and exposes the bytes that make the encoded value possible.
How to test it
Paste text, switch modes, try URL-safe output, omit padding, and inspect the byte table to see how characters become binary data.
When it helps
Use it for data URLs, API examples, encoded configuration values, token segments, or debugging whether a Base64 string contains valid UTF-8 text.