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CRC-16 Checksum

CRC-16 (CCITT / XMODEM) checksum in hex.

Runs locally in your browser. Your data is never uploaded.

What is the CRC-16 Checksum?

CRC-16 (CCITT / XMODEM) checksum in hex. The CRC-16 Checksum is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Cryptography tools on DevNibble such as Hash Generator, MD5 Hash Generator, CRC32 Checksum.

How to use the CRC-16 Checksum

  1. Paste or type your input.
  2. The result appears instantly.
  3. Copy or download it.

Features

  • Runs 100% in your browser — your data is never uploaded or stored.
  • Free forever, with no account, no ads and no tracking.
  • Copy or download your result in one click.
  • Fast and responsive on desktop, tablet and mobile.

Frequently asked questions

Is the CRC-16 Checksum free to use?

Yes — CRC-16 Checksum is completely free with no sign-up, no ads and no limit on how many times you can use it.

Is my data private when I use the CRC-16 Checksum?

Everything happens locally in your browser. Your input is never sent to a server, which makes CRC-16 Checksum safe to use with private or sensitive data.

How do I use the CRC-16 Checksum?

Type or paste your text and the CRC-16 Checksum value is computed instantly, right in your browser.

Can a CRC-16 value be reversed back to the original?

No. CRC-16 Checksum is a one-way function — the original input cannot be recovered from the output, which is why it is used for integrity checks and fingerprints. For storing passwords, use a slow KDF such as bcrypt or Argon2 instead.