Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text and files instantly in your browser.
How to Use the Hash Generator
1
Enter Text or Upload File
Switch between Text and File modes. Type text or drag a file to compute its hash.
2
Choose Algorithm
Select MD5, SHA-1, SHA-256, or SHA-512. Or click All Algorithms to see all four at once.
3
Copy the Hash
Click Copy Hash to copy the result to your clipboard for verification or sharing.
Hash Algorithm Reference
| Algorithm | Bit Length | Hex Length | Security | Use Case |
|---|---|---|---|---|
| MD5 | 128 | 32 chars | Broken | Checksums, non-critical |
| SHA-1 | 160 | 40 chars | Deprecated | Legacy systems, git |
| SHA-256 | 256 | 64 chars | Secure | TLS, blockchain, general |
| SHA-512 | 512 | 128 chars | Most Secure | High-security, large data |
Frequently Asked Questions
A hash is a fixed-length string generated from input data using a mathematical algorithm. Hashing is a one-way function — you cannot reverse a hash back to the original input. Hashes are used for data integrity verification, password storage, and digital signatures.
MD5 produces a 128-bit hash and is considered cryptographically broken. SHA-1 produces 160 bits and is also deprecated. SHA-256 produces 256 bits and is currently secure. SHA-512 produces 512 bits and offers the highest security. For modern applications, use SHA-256 or SHA-512.
No, hashes are mathematically one-way functions. You cannot reverse a hash to find the original input. However, weak passwords can be looked up in rainbow tables — precomputed hash databases. This is why salting passwords before hashing is important.
Yes. All hashing is performed locally in your browser using the Web Crypto API (SubtleCrypto) and a native JavaScript MD5 implementation. Your data never leaves your device and is not sent to any server.
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