Base58 Encoder / Decoder
Encode or decode Base58 text — the same alphabet Bitcoin addresses use.
Encoding and decoding happen entirely in your browser. Nothing here is ever sent to a server.
Output
ValidY3eVE66xDfKs7gEast7
For informational and educational purposes only — not professional or technical advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why Bitcoin addresses use Base58, not Base64
Base58 drops four characters Base64 uses: 0, O, l, and I — all visually ambiguous in many fonts — plus the "+" and "/" symbol characters, which can break URLs and double-click text selection. What's left is 58 characters safe to read aloud, write on paper, and click to select as one word, which is exactly why Bitcoin (and IPFS content hashes, and several other systems built around identifiers a human might need to transcribe by hand) settled on it instead of the more compact but less forgiving Base64.
Frequently asked questions
Why does Bitcoin use Base58 instead of Base64?
Base58 deliberately excludes characters that are easy to misread or confuse — 0/O, I/l — since Bitcoin addresses are sometimes transcribed by hand or read aloud, where those visual ambiguities cause real errors.