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Base58 & Base62 Encoder / Decoder

Encode and decode text using Base58 (Bitcoin alphabet) or Base62. Real-time conversion, character statistics, runs entirely in your browser.

Input (Text) Base58
Output (Encoded)
Character Statistics
0
Input Length
0
Output Length
-
Size Ratio
0
Unique Chars

Understanding Base58 & Base62

What they are, how they differ, and when to use each.

Base58 (Bitcoin Alphabet)

Base58 encodes binary data using 58 characters. It deliberately removes ambiguous characters to prevent human reading errors:

  • 0 (zero) and O (uppercase O) look similar
  • I (uppercase I) and l (lowercase L) look similar
  • + and / are removed (not URL-safe)
123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

Base62

Base62 uses the full alphanumeric set: all digits, uppercase, and lowercase letters. No special characters, making it URL-safe without encoding.

  • 62 characters: 0-9, A-Z, a-z
  • More compact than Base58 (larger alphabet)
  • Ideal for short URLs, unique IDs, tokens
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

Common Use Cases

  • Base58: Bitcoin/crypto addresses, IPFS hashes, Solana keys
  • Base58: Any context where humans read/copy encoded data
  • Base62: URL shorteners (bit.ly, TinyURL)
  • Base62: Database-friendly unique IDs, session tokens
  • Both: Compact representation of binary/numeric data

Key Differences

  • Alphabet size: Base58 = 58 chars, Base62 = 62 chars
  • Ambiguity: Base58 removes confusing chars, Base62 does not
  • Compactness: Base62 is slightly more compact
  • Human-friendly: Base58 wins for readability
  • No padding: Neither uses = padding like Base64