Free Base58 Encoder/Decoder (Bitcoin Format)
Quick Tips
- • This tool runs entirely in your browser - your data stays private.
- • Press Ctrl+V (Cmd+V on Mac) to quickly paste text.
- • Use the Copy button to save your result to clipboard.
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Encode and decode data using Base58, commonly used in Bitcoin addresses.
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Examples
Hello
9Ajdvzr
9Ajdvzr
Hello
Satoshi
4mM9QwCLUn
Blockchain
4jJc4sAwPs95Lsv
Why Use This Tool?
What problems does this solve?
When users need to manually type or transcribe encoded data, Base64's similar-looking characters cause errors. Base58 eliminates ambiguous characters, making identifiers like cryptocurrency addresses much easier to handle accurately.
Common use cases:
- Working with Bitcoin and cryptocurrency addresses
- Decoding IPFS content identifiers (CIDs)
- Creating human-friendly unique identifiers
- Analyzing blockchain transactions and wallet addresses
- Generating short URLs similar to Flickr's format
Who benefits from this tool?
Cryptocurrency developers and enthusiasts. Blockchain researchers analyzing addresses. IPFS users working with content identifiers. Anyone needing human-transcribable encoded identifiers.
Privacy first: All encoding and decoding happens locally in your browser. Your cryptocurrency-related data never leaves your device.
Frequently Asked Questions
Bitcoin uses Base58 to avoid confusion between similar-looking characters (0/O, I/l) and to exclude characters (+, /) that cause issues in URLs. This makes addresses easier to transcribe manually without errors.
Base58 is just the encoding scheme. Base58Check adds a 4-byte checksum derived from SHA-256 hashing, which allows detection of transcription errors in addresses. Bitcoin addresses use Base58Check.
0 and O look similar, as do I (uppercase i) and l (lowercase L). These pairs cause transcription errors. Plus (+) and slash (/) are excluded because they have special meanings in URLs.
This tool does basic Base58 encoding/decoding. Full Bitcoin address validation requires Base58Check decoding and checksum verification, plus checking the address version byte.
Yes! IPFS content identifiers (CIDs), Flickr short URLs, and various blockchain platforms use Base58. Any application needing human-friendly identifiers may benefit from Base58.
Leading zero bytes in the input are converted to leading "1" characters in Base58. This preserves the exact length of the original data, which is important for Bitcoin addresses.
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