Base32, Base58 & Base85 Converter
The other bases: RFC 4648, Bitcoin, and ASCII85.
Free · no sign-up · runs locally·
About this tool
Beyond Base64 lives a family of alternative alphabets: Base32 (case-insensitive, used in TOTP secrets and onion addresses), Base58 (Bitcoin's ambiguity-free alphabet — no 0/O or I/l), and Base85 (denser than Base64, used in PDF and git packs). All three encode and decode here.
Like everything on encrypt.tools, this runs entirely in your browser — nothing you enter is transmitted or stored.
Frequently asked questions about Base32 / 58 / 85
What's the difference between Base32, Base58, and Base85?+
Base32 is case-insensitive (used in TOTP secrets and onion addresses); Base58 drops confusable characters (used by Bitcoin); Base85 is denser than Base64 (used in PDF and git).
Why does Bitcoin use Base58?+
To avoid ambiguous characters — no 0/O or I/l — so addresses are less error-prone when typed or read aloud.
Can I decode back to text?+
Yes — the decode mode shows both the decoded text (if valid UTF-8) and the raw hex bytes.