Hash Generator
Hash Function Support: Generates MD5, SHA-1, SHA-256, and SHA-512 hashes. Used for file integrity verification, data identification, encryption, etc.
Standards: NIST FIPS 180-4 (SHA-2), RFC 1321 (MD5), RFC 3174 (SHA-1)
Security Note
Do not use MD5 or SHA-1 for security purposes. Use only for checksums.
SHA-256 or higher is recommended.
Enter text above to generate hashes
Hash Generator converts text data into unique hash values using various hash algorithms. Used for file integrity verification, password storage, data identification, and more. All processing is done in your browser and data is never sent to our servers.
How to Use
- 1
Enter the text you want to hash.
- 2
Select the desired hash algorithm (MD5, SHA-1, SHA-256, SHA-512).
- 3
In Live mode, all hashes are generated automatically as you type.
- 4
Copy the generated hash values to use them.
- 5
Be aware of case sensitivity and whitespace handling for accurate hash generation.
Use Cases
File Integrity Verification
Calculate the hash of downloaded files and compare it with the original to verify that the file has not been tampered with.
Password Storage
Store user passwords as hash values instead of plain text for enhanced security. (But use bcrypt or Argon2 instead.)
Data Identifier
Use hashes as unique identifiers for files, documents, messages, etc., to prevent duplication.
Blockchain & Cryptocurrency
SHA-256 is widely used in blockchain technology to calculate and verify block hashes.
What is a Hash Function?
A hash function is a one-way function that converts arbitrary-size data into a fixed-size unique value (hash). Same input always produces the same hash, and even tiny changes result in completely different hash (avalanche effect).
MD5 (128-bit): Fast but collision-vulnerable. Use only for file checksums.
SHA-1 (160-bit): More secure than MD5 but no longer recommended.
SHA-256/SHA-512 (256/512-bit): Current standard. Use for security-critical purposes.
Frequently Asked Questions (FAQ)
Q.Is my data safe?
A. Yes, completely safe. All hash calculations are processed only in your browser; data is never transmitted to or stored on our servers.
Q.Is hashing encryption?
A. No, hashing is not encryption. Hashing is a one-way function and cannot restore original data. Encryption is bidirectional (encrypt/decrypt), but hashing is only one-way.
Q.Which hash algorithm should I use?
A. Use SHA-256 or higher for security-critical purposes. MD5 and SHA-1 are vulnerable to collision attacks; use them only for file checksums or non-security purposes. For password hashing, use dedicated algorithms like bcrypt, scrypt, or Argon2.
Q.Can different data have the same hash?
A. Theoretically yes (collision). But with modern hash functions like SHA-256, finding collisions is computationally infeasible. MD5 and SHA-1 have known collisions and are not used for security.
Q.Is storing passwords as hashes safe?
A. Simple hashing alone is insufficient. It's vulnerable to rainbow table attacks. Add salt and use slow hash functions like bcrypt, scrypt, or Argon2. Fast hashes like SHA-256 are not suitable for password storage.
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