(Документація англійською)
What it does
The Base Encoder converts text into four common byte-array base encodings - Base32 (RFC 4648), Base58 (Bitcoin), Base62, and Base85 (Ascii85) - and decodes them back to text. Each encoding operates on the UTF-8 bytes of your input, so multibyte characters and emoji round-trip perfectly. These encodings show up everywhere: Base32 in TOTP authenticator secrets and
DNSSECDNSSECA DNS extension that cryptographically signs zone records, letting resolvers verify answers were not forged or altered in transit.Learn more
, Base58 in Bitcoin addresses and short share links, Base62 in URL shorteners, and Ascii85 (btoa) in PDF and PostScript streams. Everything runs 100% client-side: nothing you type is ever sent to a server, so it’s safe for secrets and credentials.How to use it
- Pick the scheme - Base32, Base58, Base62, or Base85 - from the segmented toggle.
- Choose Encode (text → encoded) or Decode (encoded → text).
- Type or paste into Input (or hit Sample for a multibyte demo string).
- Read the result in Output, or the error message if the input is invalid for the chosen scheme.
- Copy the result, or Copy share link to send the exact input, mode, and scheme to a teammate.
Examples
Base32 (RFC 4648, padded)
Input: hello → Output:
NBSWY3DPInput: foo (3 bytes) → Output (padded with = to a multiple of 8 chars):
MZXW6===Base58 (Bitcoin alphabet - leading zero bytes become leading 1s)
Input: A → Output:
28Base62 (BigInt base-conversion)
Input: A → Output:
13Base85 / Ascii85 (4 bytes → 5 chars; a full zero group shortens to z)
Input: hi → Output:
BP@Good to know
- Multibyte-safe: all four schemes encode the UTF-8 bytes of your text, so emoji and non-ASCII round-trip cleanly.
- Base32 uses the RFC 4648 alphabet (
A-Z2-7) and pads with=to multiples of 8 chars. Base58 uses the Bitcoin alphabet (no0,O,I,l) and preserves leading zero bytes as leading1s. Base62 is0-9A-Za-zwith no leading-zero special-casing. Base85 is Ascii85 (!-u) with thezzero-group shorthand and no<~~>delimiters. - Invalid input → error: a character outside the chosen alphabet (or a malformed trailing group) shows an error instead of garbage - decode rejects it rather than guessing.
- Shareable: your input, mode, and scheme are encoded in the URL, so a link reproduces the exact view.
- Private: all computation is 100% client-side - safe for secrets and credentials.
- Related tools:
Base64Base64An encoding representing binary data as 64 safe ASCII characters, so it survives transport through text-only channels. It encodes — it does not encrypt.
, Hex Converter,HashHashA one-way function that maps data of any size to a fixed-length digest. Same input, same digest; any change, different digest; not reversible.
(SHA),HMACHMACA construction that combines a hash function with a secret key to prove a message is intact and came from someone holding the key.
Generator.