Bech32 / Bech32m Encoder / Decoder

Encode bytes into Bech32 or Bech32m, decode checksummed strings, and inspect prefixes, data words, checksums, and Bitcoin witness structure.

Understand Bech32 and Bech32m

What Bech32 does

Bech32 and Bech32m turn 5-bit data words into a readable checksummed string with a human-readable prefix, a separator, and a restricted alphabet.

qpzry9x8gf2tvdw0s3jn54khce6mua7l

Type: Encoding Separator: 1 Checksum: 6 chars Security: Not encryption

Variant and input

Bech32Checksum constant 0x01. Bech32mChecksum constant 0x2bc830a3. Auto-detectAccept valid Bech32 or Bech32m. Require Bech32Reject Bech32m checksums. Require Bech32mReject Bech32 checksums. Encode textUTF-8 text becomes bytes first. Encode hex bytesUse exact bytes such as 68 65 6C. Encode 5-bit wordsUse values from 0 to 31.

Human-readable prefix

Ignore whitespace when decoding

Text input is encoded as UTF-8 bytes and converted into 5-bit words before Bech32 encoding.

Decoded / encoded details

Mode: Encode Variant: Bech32 Input bytes: 0 Output chars: 0 Data words: 0 HRP: None Separator: None Checksum: None Bitcoin shape: Generic

Bech32 and Bech32m are reversible encodings with checksum validation. They can catch many copying errors, but they do not hide secrets or protect wallet material.

Input text

Output Bech32

Using This Tool: Guide & Notes Show guide

Bech32 and Bech32m encode 5-bit data words with a human-readable prefix and checksum, making them useful for Bitcoin-style address strings and copy-safe identifiers.

How to use it

Choose Encode to create a Bech32 or Bech32m string, or Decode to inspect an existing checksummed string.
Set the human-readable prefix when encoding. Examples include test, bc, tb, and bcrt.
Choose text, hex bytes, or raw 5-bit word input before encoding.
Use the decoded structure panel to inspect the prefix, separator, checksum characters, data words, and Bitcoin witness shape.

Options and settings

Bech32 uses checksum constant 0x01 and is used for Bitcoin SegWit version 0 addresses.
Bech32m uses checksum constant 0x2bc830a3 and is used for SegWit version 1 and later.
Auto-detect checks the checksum and identifies whether a pasted string is Bech32 or Bech32m.
Ignore whitespace helps decode wrapped or spaced Bech32 strings copied from notes or documentation.

Notes

Bech32 and Bech32m are encoding formats, not encryption. They do not hide data.
Do not paste real wallet seeds, private keys, recovery phrases, or sensitive financial data into ordinary online tools.

Bech32 and Bech32m: Bitcoin SegWit and Taproot Address Encoding

How a checksummed base32-style format made Bitcoin addresses easier to read, safer to copy, and better suited to modern SegWit and Taproot address formats.

Read the article

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A note from the team

We build these tools because we love cryptography, encoding, and making difficult ideas easier to explore. If they've helped you, even a small coffee means the world to the project. Thank you!

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