Hash Generator
Generate secure hashes (SHA-1, SHA-256, SHA-384, SHA-512) instantly in your browser.
About the Hash Generator
Cryptographic hashes turn arbitrary input into a fixed-length fingerprint that changes completely if even one bit of the input changes. This generator computes MD5, SHA-1, SHA-256, and SHA-512 entirely in your browser via the Web Crypto API (window.crypto.subtle.digest), the same primitive that powers HTTPS in every modern browser. Use SHA-256 or SHA-512 for security-sensitive work — MD5 and SHA-1 are included for compatibility with legacy systems but are no longer collision-resistant and should not be used for signatures or password hashing.
What people use it for
- Verify a downloaded ISO or installer matches the publisher's checksum
- Confirm a file you received over email has not been tampered with
- Generate ETag-style fingerprints for cache invalidation
- Quick MD5 / SHA-1 lookups when working with legacy APIs
- Compare two files without uploading either to a server
Private by design
Everything you type here is processed inside your browser. Nothing is sent to a server, logged or stored, so it is safe to use with real numbers, drafts and anything you would not paste into a hosted tool.
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Questions people ask
What hash algorithms are supported?
This tool supports MD5, SHA-1, SHA-256, and SHA-512 hashing algorithms, all computed locally in your browser.
Can I decrypt a hash back to text?
No. Cryptographic hashes are one-way functions and cannot be reversed. They are used for data integrity verification, not encryption.
Is this hash generator secure?
Yes. All hashing is performed locally in your browser using the Web Crypto API. Your text is never sent to any server.
Can I use SHA-256 hashes to verify file integrity?
Yes. SHA-256 is widely used for file integrity verification. Generate a hash of your file content and compare it with the expected hash to confirm the file hasn't been tampered with — all without uploading anything.