Encode plaintext to Bitcoin Base58
Input
Hello WorldExample output
JxF12TrwUP45BMdBase58 Encoder & Decoder
Encoders & Decoders100% Client-SideReady
TEXT
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0 B / 4.77 MB
Read-only
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About this tool, examples & FAQ
Encode text to Base58 or decode Base58 strings back to readable UTF-8 text using Bitcoin/IPFS, Ripple, or Flickr alphabets. Preserves leading zero byte integrity and executes 100% locally in browser memory.
Key facts
| Alphabets | Bitcoin/IPFS, Ripple, and Flickr variants |
|---|---|
| Zero Preservation | Preserves leading null bytes as alphabet zero symbols |
| Maximum Input | 5 MB |
| Execution Deadline | 2 s |
How to use
- Paste your text or Base58 encoded string into the input editor.
- Select Encode or Decode operation from the toolbar.
- Choose your alphabet: Bitcoin / IPFS (default), Ripple, or Flickr.
- Click Run (or press Ctrl/Cmd + Enter) to process the payload in a local Web Worker.
- Copy or download the converted text.
Examples
Decode Bitcoin Base58 to plaintext
Input
JxF12TrwUP45BMdExample output
Hello WorldEdge cases
Preservation of leading zeros
In Base58, leading zero bytes are preserved by prepending the first character of the alphabet (e.g. '1' in Bitcoin). Multiple leading zero bytes produce multiple leading '1' characters.
Excluded ambiguous characters
The standard Bitcoin Base58 alphabet excludes '0' (zero), 'O' (capital o), 'I' (capital i), and 'l' (lowercase L) to avoid transcription mistakes.
Invalid Base58 characters
Attempting to decode strings containing non-alphanumeric characters, punctuation, or excluded ambiguous characters will produce a descriptive error pinpointing the invalid character and position.
How it works
- Encodes input UTF-8 text to a byte array using TextEncoder.
- Counts leading zero bytes to preserve significant leading null bytes.
- Performs big-integer division and modulo arithmetic base 58.
- Maps remainders to characters in the selected 58-character alphabet.
Related workflows
Base64 Encoder / Decoder
Encode UTF-8 text to standard or URL-safe Base64 and decode Base64 back to text.
Base32 Encoder / Decoder
Encode UTF-8 text to RFC 4648 Base32, extended hex, or Crockford alphabet and decode Base32 back to readable text.
Hex (Base16) Encoder / Decoder
Encode text to hexadecimal (Base16) byte strings and decode hex bytes back to UTF-8 text with customizable delimiters and prefixes.
Frequently asked questions
Why does Bitcoin use Base58 instead of Base64?
Base58 avoids confusing characters like 0 vs O and 1 vs l, and eliminates punctuation characters (+, /) so that double-clicking an address selects the whole string without splitting.
Does this tool support raw binary keys or addresses?
This tool encodes and decodes UTF-8 text. Cryptographic addresses that encapsulate raw binary hashes (Base58Check) can only be decoded to text if the underlying bytes form valid UTF-8.
Is my data private?
Yes. All computation is executed in your browser via local Web Workers. No data is sent over the network.
References
- Bitcoin Wiki: Base58Check Encoding — Specification for Bitcoin Base58 alphabet and leading zero handling