Free Online Hash Generator — MD5, SHA-1, SHA-256, SHA-512
Generate cryptographic hashes from text using MD5, SHA-1, SHA-256, and SHA-512 algorithms. HubKit's hash generator computes all four hashes simultaneously, making it easy to compare algorithms, verify data integrity, and generate checksums for passwords, API signatures, or file verification.
How to Use
Type or paste text into the input field. All four hash values — MD5, SHA-1, SHA-256, and SHA-512 — are computed instantly. Click Copy next to any hash to copy it to your clipboard.
Features
- Compute MD5, SHA-1, SHA-256, and SHA-512 hashes simultaneously
- Real-time hashing as you type
- One-click copy for each hash value
- Browser-based — uses Web Crypto API for SHA hashes
Frequently Asked Questions
Which hash algorithm should I use?
For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are considered weak for cryptographic use but are still fine for checksums and non-security purposes like cache keys.
Is MD5 still safe to use?
MD5 is not collision-resistant and should not be used for security (passwords, signatures). It is acceptable for checksums, deduplication, and cache key generation where collision attacks are not a concern.
Can I reverse a hash back to the original text?
No. Cryptographic hash functions are one-way — you cannot derive the input from the hash output. This is by design and is what makes hashing useful for password storage.