🔓 Base32 Decoder
Convert Base32 encoded strings back to plain text. Supports RFC 4648 standard. Fully client‑side – your data never leaves your device.
📖 How to Use Base32 Decoder (Step by Step)
- Step 1: Paste a Base32 encoded string into the left text area or upload a .txt/.base32 file containing the Base32 data.
- Step 2: Click "Decode to Plain Text" – the tool converts the Base32 back to readable text.
- Step 3: The decoded result appears in the right panel. You can copy it or swap it with the input field.
- Step 4: Use the "Load Example" button to test with a known sample (decodes to "Hello World!").
- Step 5: If the decoded data is not valid UTF-8, a hex preview is shown.
💡 What is Base32?
- ✔️ Base32 uses a 32‑character set (A‑Z, 2‑7) – compact and URL‑safe.
- ✔️ Commonly used for TOTP secrets, email hashes, and DNS records.
- ✔️ This decoder follows RFC 4648 and ignores whitespace and padding.
💡 Pro Tip: Base32 is case‑insensitive and ignores spaces. The padding (=) is optional. This tool handles both correctly.
🔒 100% client‑side • Your data never uploaded • RFC 4648 compliant • Zero tracking