Hash Generator
Generate cryptographic hashes from text using multiple algorithms simultaneously. See MD5, SHA-1, SHA-256, and SHA-512 hashes update in real time as you type. Uses the Web Crypto API for SHA algorithms and a built-in implementation for MD5. Essential for verifying file integrity, storing passwords, and working with checksums.
About Hash Generator
- MD5 — 128-bit hash, widely used for checksums (not cryptographically secure)
- SHA-1 — 160-bit hash, legacy usage (deprecated for security)
- SHA-256 — 256-bit hash, part of SHA-2 family, widely used in security
- SHA-512 — 512-bit hash, strongest option in SHA-2 family
- All processing happens locally in your browser — nothing is sent to any server
How to Use
- 1
Enter Your Text
Type or paste the text you want to hash into the input area.
- 2
View All Hashes
MD5, SHA-1, SHA-256, and SHA-512 hashes are computed automatically as you type.
- 3
Copy Any Hash
Click the copy button next to any hash algorithm to copy it to your clipboard.
Examples by Niche
Hash a file checksum string to compare with the expected SHA-256 value from the download page
Generate HMAC-like hashes for signing API requests or webhook payloads
Hash content to create unique identifiers for detecting duplicate entries
Frequently Asked Questions
What is the difference between MD5 and SHA-256?
MD5 produces a 128-bit hash and is fast but considered cryptographically broken. SHA-256 produces a 256-bit hash and is currently considered secure. Use SHA-256 or SHA-512 for security-critical applications.
Can I reverse a hash to get the original text?
No, cryptographic hash functions are one-way. You cannot reverse a hash to recover the original input. This is by design and is what makes hashes useful for password storage.
Which hash algorithm should I use for file integrity checks?
SHA-256 is the standard choice for verifying file integrity and software downloads. It provides a strong guarantee that the file has not been tampered with or corrupted. MD5 is still used by some older systems but is not recommended because collision attacks have been demonstrated against it.
Why do two different inputs sometimes produce the same MD5 hash?
This is called a collision, and it is a known weakness of MD5. Researchers have demonstrated practical collision attacks where two different inputs produce the same 128-bit hash. This is why MD5 is considered broken for security purposes, though it is still acceptable for non-security uses like checksums in caches.
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