Hash Generator – MD5, SHA-1, SHA-256, SHA-512 Free Online
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Free online hash generator - runs in your browser.
Frequently Asked Questions
This tool supports SHA-1, SHA-256, SHA-384, and SHA-512. All four hashes are computed simultaneously so you can compare them side by side.
Yes. Click 'Hash File' to select any file from your device. The file is read locally using the FileReader API and hashed in your browser — it is never uploaded to a server.
SHA-256 is widely used for data integrity verification, digital signatures, password hashing (with a proper KDF), and blockchain applications. It produces a 256-bit (64 hex character) digest.
SHA-1 is considered cryptographically broken for security-sensitive applications (collision attacks have been demonstrated). It is still useful for non-security checksums and legacy compatibility, but SHA-256 or higher is recommended for new applications.
Yes. All hashing uses the browser's built-in Web Crypto API (crypto.subtle.digest). Your text and files never leave your device.
What is Hash Generator?
A hash generator computes a cryptographic hash (also called a checksum or digest) from text or a file. Hash functions like MD5, SHA-1, SHA-256, and SHA-512 produce a fixed-length string that uniquely represents the input data. Hashes are used to verify file integrity, store passwords securely, and detect data tampering. Our Hash Generator runs entirely in your browser using the Web Crypto API.
How to Use Hash Generator
- 1Enter text or upload a file.
- 2Select the hash algorithm (MD5, SHA-1, SHA-256, SHA-512).
- 3The hash is generated instantly.
- 4Copy the hash to your clipboard.
Key Features
- ✓MD5, SHA-1, SHA-256, SHA-512 algorithms
- ✓Hash text or files
- ✓Instant generation
- ✓One-click copy
- ✓Runs in your browser using Web Crypto API
Benefits
- →Verify file integrity after download
- →Generate checksums for software distribution
- →Understand cryptographic hash functions
Why Use Irreva for Hash Generator?
Frequently Asked Questions
What is a hash?
A hash is a fixed-length string produced by a hash function from any input data. The same input always produces the same hash, but even a tiny change in input produces a completely different hash.
Which hash algorithm should I use?
For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are considered cryptographically broken and should only be used for non-security purposes like checksums.
Can I reverse a hash to get the original text?
No. Hash functions are one-way - it is computationally infeasible to reverse a hash to recover the original input.
Is my data sent to a server?
No. All hashing happens in your browser using the Web Crypto API. The text or file you hash is processed locally  the hash output and your input never leave your device.
Rate Hash Generator
How useful was this tool?