Encode Text to Base58 Encode text to Base58 format used by Bitcoin and IPFS.

What Is Base58 Encode?

Base58 encoding uses 58 alphanumeric characters, excluding visually ambiguous ones: 0 (zero), O (uppercase o), I (uppercase i), and l (lowercase L). Created by Satoshi Nakamoto for Bitcoin addresses, it produces shorter, more human-friendly strings than hex. Also used by IPFS, Ripple, and Flickr. The alphabet is 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz. This tool encodes UTF-8 text to Base58 using big-integer arithmetic. All processing happens in your browser.

Why Use Base58 Encode?

• Human-friendly encoding that avoids visually ambiguous characters
• Compact representation — shorter than hex or Base32
• 100% client-side — data never leaves your browser
• Same alphabet used by Bitcoin, IPFS, and other major systems

Common Use Cases

Cryptocurrency

Encode data in Bitcoin's Base58 format for addresses and keys.

IPFS Hashes

Work with IPFS content identifiers that use Base58.

Short Identifiers

Create short, human-readable identifiers for URLs and databases.

Data Encoding

Encode binary data in a compact, unambiguous text format.

Technical Guide

The encoding treats input bytes as a big-endian big integer and repeatedly divides by 58, collecting remainders as encoded digits. Leading zero bytes are preserved as '1' characters. Unlike Base64, Base58 does not use padding. The encoding uses BigInt arithmetic for accuracy with arbitrary-length inputs. It is slightly less efficient than Base64 but avoids characters that could cause confusion.

Tips & Best Practices

• 1
  Base58 excludes 0, O, I, and l to avoid visual confusion
• 2
  Leading zero bytes map to '1' characters in the output
• 3
  Base58 is slightly less space-efficient than Base64 but more readable
• 4
  Used by Bitcoin — not the same as Base58Check which adds a checksum

Related Tools

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Base58 Decode

Decode Base58-encoded strings back to plain text.

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Base85 Encode

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Frequently Asked Questions

Q Is this tool free?

Yes, completely free with no signup required.

Q Is my data secure?

Yes. All processing is 100% client-side.

Q What characters does Base58 use?

123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz — excluding 0, O, I, and l.

Q What browsers are supported?

All modern browsers including Chrome, Firefox, Safari, and Edge.

Q Is this the same as Bitcoin Base58Check?

No, this is plain Base58. Base58Check adds a version byte and checksum.

About This Tool

Base58 Encode is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.