Base58 Encoder and Decoder
Convert text to or from raw Base58 using the Bitcoin alphabet, with no checksum or network request.
A QUICK WALKTHROUGH
How to use this tool
- Choose Encode or Decode.
- Paste up to 50,000 characters.
- Convert, then copy or download the result.
Bitcoin Base58 alphabet
This tool uses 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz. The alphabet omits 0, O, I, and l to reduce visual confusion. Leading zero bytes are preserved as leading 1 characters.
Raw Base58 only
The tool converts UTF-8 text bytes and does not add or verify a Base58Check checksum, version byte, wallet address, or other application-specific structure. Use the same Base58 variant as the system that will consume the result.
Local conversion limits
Encoding and decoding run in your browser. Input is limited to 50,000 characters; decoded data must be valid UTF-8 text to display.
GOOD TO KNOW
Common questions
Is this Base58Check?
No. It is raw Base58 using the Bitcoin alphabet. No checksum or version byte is added or verified.
Why are some letters missing?
The Bitcoin Base58 alphabet omits 0, O, I, and l because they can look similar in some fonts.
Can I decode arbitrary binary data?
This text tool displays decoded bytes only when they form valid UTF-8 text. It does not produce a binary file.