CRC
CRC32 Checksum Calculator
CRC-32 and Adler-32 checksums of text.
21cf10a0
CRC-32 (hex)
567218336
CRC-32 (dec)
215004f3
Adler-32 (hex)
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Paste or type your text.
- 2Choose the options you need.
- 3Copy or download the result.
About this tool
CRC32 Checksum Calculator: CRC-32 and Adler-32 checksums of text. Paste your text and the result appears immediately, ready to copy or download. Everything happens locally in your browser — nothing you paste is uploaded or stored.
How do I use the CRC32 Checksum Calculator?
Paste or type your text. Choose the options you need. Copy or download the result.
Is the CRC32 Checksum Calculator free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.