File tool

File Hash Generator

Calculate SHA-256, SHA-384 or SHA-512 checksums for a local file.

SHA-256SHA-384SHA-512Copy checksum
Fast browser tool

File Hash Generator

Add your file, choose the main result and process it. Advanced controls stay optional.

Private on-device processing
Main settings

Choose your result

AlgorithmHash algorithm

Your file stays in this browser tab and is not sent to a conversion server.

How it works

Use File Hash Generator in three steps

  1. 1

    Choose a file from your device.

  2. 2

    Select the hash algorithm.

  3. 3

    Generate and copy the checksum.

What a checksum can tell you

A cryptographic hash produces a fixed-length fingerprint from file contents. If one byte changes, the resulting hash should change. Comparing a trusted published checksum with your calculated value can reveal corruption or modification.

A matching checksum confirms that the bytes match the referenced copy. It does not prove that the original publisher was trustworthy.

Choose SHA-256 for general verification

SHA-256 is widely used for software and archive checksums. SHA-384 and SHA-512 produce longer values and are also available when a source publishes one of those algorithms.

Questions

Frequently asked about File Hash Generator

Is the file uploaded?+

No. The Web Crypto API reads and hashes the local file in your browser.

Why is MD5 not included?+

MD5 is not provided by the browser Web Crypto digest API and is no longer preferred for security verification.

Can two different files have the same hash?+

Collisions are theoretically possible, but modern SHA-2 hashes are designed to make them impractical for normal verification.

Learn more

Guides related to this task

File integrity

What Is a File Hash and How Do You Verify a Checksum?

Learn how SHA-256 checksums help detect corruption or changes in a file.

Read guide Privacy

How Private Browser-Based File Processing Works

Understand local processing, browser memory and the checks you can perform before selecting a sensitive file.

Read guide Privacy & safety

How to Check Whether an Online File Converter Is Safe

A practical checklist for uploads, local processing, downloads, permissions, ads and sensitive files.

Read guide
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