Privacy-focused processing

Hash & Checksum Generator

Create SHA-256, SHA-384, SHA-512 or CRC32 values from text.

We use reasonable safeguards to help protect your files and information while you use the service.

What to select

Paste text and choose SHA-1, SHA-256, SHA-384, SHA-512 or CRC32.

0 characters · 0 UTF-8 bytes. Up to 1,000,000 characters. Processing stays in this browser.

What this developer tool does

Create SHA digests or a CRC32 checksum from UTF-8 text with Web Crypto for SHA algorithms.

How to use Hash & Checksum Generator

  1. Enter the exact text to hash.
  2. Choose SHA-1, SHA-256, SHA-384, SHA-512, or CRC32.
  3. Generate and copy the lowercase hexadecimal result.

Example

CRC32 of 123456789 is cbf43926.

Practical note: Hashes are one-way fingerprints, not encryption. SHA-1 and CRC32 are retained for compatibility and should not be used for security decisions.

Supported formats

Plain text, JSON, XML, standard or URL-safe Base64, URL components, UUID v4, secure passwords, SHA-256, SHA-384, SHA-512 and CRC32.

Limits and safety

Text input is limited to 1,000,000 characters per task, UUID generation to 100 values, and passwords to 8–128 characters.

Frequently asked questions

Is my input uploaded or saved?

No. These developer utilities process input only in this browser tab.

Can a generated hash be reversed?

No. Cryptographic hashes are one-way values. CRC32 is a checksum for detecting accidental changes, not a security hash.

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