Base32 Encoder / Decoder

Encode text to Base32 (RFC 4648) or decode Base32 back to plain text. Runs entirely in your browser.

Plain text input

Base32 output

JBSWY3DPFQQFO33SNRSCC===

Input length

Output length

Expansion

1.85x

About Base32 (RFC 4648)

Base32 encodes binary data using only 32 ASCII characters: A–Z and 2–7. Output is padded with = to a multiple of 8 characters.

Each Base32 character represents 5 bits, so every 5 input bytes produce 8 output characters — a ~60% size increase compared to ~33% for Base64.

Common uses: TOTP/HOTP secret keys, case-insensitive identifiers, data encoding in environments that don't support the full Base64 alphabet.

Alphabet

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 2 3 4 5 6 7

More to explore

Browse all tools from the same category.

Domain Authority Checker

Check Moz authority, page authority, spam score, and backlink metrics

SEO Audit Tool

Audit a website URL for technical SEO, metadata, headings, links, and report exports

Showing 1-2 of 26