What hash algorithms are supported?

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.

What is SHA-256 used for?

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.

Is SHA-1 still safe to use?

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.

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.

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.

Input Text

100% Private

No Upload

Instant

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

Use Cases

Hash generation guide Best Password Generator SHA-256 vs SHA-512 UUID vs GUID Hashing vs Encryption

Why Use Irreva for Hash Generator?

Verify file integrity after download

Generate checksums for software distribution

Understand cryptographic hash functions

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

Base64 vs hashing

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