Base32 encode decode

Encode text or decode Base32.

On your device · No account

Privacy details

Base32 encode decode processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Your input

Direction

Options and local file

Open a text file on this device

Optional settings apply only to this tab.

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-20

Base32 encode decode explained

Base32 represents UTF-8 bytes using the RFC 4648 alphabet A–Z and 2–7. Encoding includes equals-sign padding; decoding accepts correctly padded or unpadded text and checks unused trailing bits.

Next: Base64 encoder and decoder

Next: Binary converter

Next: Unicode escape converter

A worked example

foo becomes MZXW6===. A lowercase encoded input is accepted and decoded to the same UTF-8 text.

Before you use the result

Uses standard Base32, not Base32hex or Crockford Base32. Whitespace is ignored while decoding. Binary bytes that are not UTF-8 are rejected.

Cite this page

Citation style

ToolOctopus. “Base32 encode decode.” Updated 2026-09-20. https://tooloctopus.com/base32-encode-decode.

Add an access date if your instructions require one.

Citation formatting uses citeproc-js by Frank Bennett and Citation Style Language styles. Licence and source code.