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Base32 Encoder / Decoder

Encode and decode text using RFC 4648 Base32 — A-Z and 2-7 with = padding.

Input Text

Base32 Output

Input: 0 bytes

Output: 0 chars

Efficiency: —

Base32 Character Set (RFC 4648)

ABCDEFGHIJKLMNOPQRSTUVWXYZ234567
Padding character: = (equals sign)

About Base32 Encoder / Decoder

Security-sensitive operations should never require uploading your data to a third-party server. Base32 Encoder / Decoder runs entirely in your browser, letting you encode and decode text using rfc 4648 base32 — a-z and 2-7 with = padding with complete confidence that your information stays private. No server calls, no logging, no data retention.

How to Use

Enter your data Paste or type your sensitive data into the input field. Remember: nothing leaves your browser.

Configure options Select the algorithm, encoding format, key size, or other parameters as needed.

Process Click the action button to encrypt, hash, encode, or perform the security operation.

Copy the output Copy the result securely. For sensitive outputs, make sure to store them in a safe location.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Base32 Encoder / Decoder?

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True Client-Side Security All cryptographic operations run in your browser using the Web Crypto API. Your sensitive data — passwords, keys, encrypted messages — never touches any server.

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Industry-Standard Algorithms Base32 Encoder / Decoder uses the same cryptographic algorithms trusted by banks, governments, and security professionals worldwide. No homebrew crypto.

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Open & Transparent View the source code right in your browser (Ctrl+U). Verify exactly what the tool does with your data — no hidden behavior, no tracking.

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No Registration Required Security tools should be accessible without creating accounts or sharing personal information. Use Base32 Encoder / Decoder immediately — no sign-up, no email, no strings attached.

Frequently Asked Questions

Base32 encodes binary data using 32 characters: A-Z (26 letters) and 2-7 (6 digits). Each Base32 character represents 5 bits. It's less compact than Base64 but uses only uppercase letters and a few digits — making it easier to read aloud and safe in case-insensitive contexts.

Base32 is commonly used in TOTP/HOTP secret keys (Google Authenticator), file systems that are case-insensitive (like some email systems), and encoding data in URLs without special characters. It's the standard encoding for authenticator app secrets.

Base32 groups input bytes into 5-bit units, but bytes are 8 bits. To make the output length a multiple of 8 characters (40 bits), = signs are added to pad the final group. This makes it clear exactly how many bytes were encoded and simplifies decoding.