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Free Online Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Runs entirely in your browser.

What is a Hash Function?

A cryptographic hash function takes an input (or "message") and returns a fixed-size string of bytes. The output (the "hash" or "digest") is deterministic - the same input always produces the same output - but it's computationally infeasible to reverse the process or find two inputs that produce the same hash.

Supported Algorithms

MD5 (128-bit)

Fast but deprecated for security. Still used for checksums and non-security purposes.

SHA-1 (160-bit)

Deprecated for certificates but still used in Git and legacy systems.

SHA-256 (256-bit)

Industry standard. Used in TLS, Bitcoin, and digital signatures.

SHA-512 (512-bit)

Maximum security. Faster than SHA-256 on 64-bit processors.

Frequently Asked Questions

Is my data safe?
Yes. All hashing is performed entirely in your browser using the Web Crypto API. No data is ever sent to our servers.
Can I hash files?
Yes. Click the File button to upload any file and generate its hash. This is useful for verifying file integrity.
Which algorithm should I use?
For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are suitable only for checksums and legacy compatibility.
Can a hash be reversed?
No. Cryptographic hash functions are one-way. You cannot derive the original input from a hash.

Need HMAC or encryption?

Check out our HMAC Generator and AES Encrypt/Decrypt tools for more advanced cryptographic operations.

All Tools

About the Hash Generator

The Hash Generator is a free online tool that lets you generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files. It runs entirely in your browser with no sign-up required, so you get instant results while your data stays on your device. It is built for developers, designers, and anyone who needs a fast, reliable hash generator without installing software.

How to use the Hash Generator

  1. 1Open the Hash Generator and enter or paste your input.
  2. 2Adjust the available options to match what you need.
  3. 3View the result instantly as you work.
  4. 4Copy or download the output to use in your project.

Frequently asked questions

Is the Hash Generator free to use?

Yes. The Hash Generator is completely free with no account, sign-up, or installation required.

Is my data private when I use the Hash Generator?

This tool runs entirely in your browser. Your data is never uploaded to a server, which makes it safe to use with sensitive input.

Do I need to install anything?

No. The Hash Generator works in any modern web browser on desktop or mobile, with nothing to download.

Can I use the Hash Generator on mobile?

Yes. The tool is responsive and works on phones, tablets, and desktops.

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