File Hash Checker
Calculate file hash values for MD5, SHA1, SHA256 and SHA512. Verify file integrity by comparing hash checksums.
Drag & drop a file here, or click to select
Supports any file type
About File Hash Checker
Our free online File Hash Checker is a powerful tool that calculates cryptographic hash values for any file you upload. It supports four widely-used hash algorithms: MD5, SHA1, SHA256, and SHA512, giving you the flexibility to choose the right algorithm for your needs.
Hash functions generate a unique fixed-length string of characters for any given input. Even a tiny change in the file content will produce a completely different hash, making them ideal for verifying file integrity and detecting tampering or corruption during file transfers.
This tool processes your files entirely in the browser using the Web Crypto API, ensuring your data never leaves your device. Large files are read in chunks, allowing efficient hashing without consuming excessive memory.
The built-in comparison feature lets you paste an expected hash value and instantly verify whether your file matches. This is especially useful for validating downloaded software, verifying backups, or ensuring files were not modified during transfer.
Features
Multiple Algorithms
Support MD5, SHA1, SHA256, and SHA512 hash algorithms for versatile file verification.
Hash Comparison
Compare your file's hash against an expected value to verify file integrity instantly.
Drag & Drop
Simply drag and drop files or click to browse. Supports any file type without restrictions.
Privacy First
All processing happens in your browser using the Web Crypto API. Your files never leave your device.
One-Click Copy
Copy the generated hash to clipboard with a single click for easy sharing and verification.
Large File Support
Process large files efficiently using chunked reading without consuming excessive memory.
How to Use
Upload Your File
Drag and drop a file into the upload area or click to browse and select a file from your device.
Select Algorithm
Choose the hash algorithm you want to use: MD5, SHA1, SHA256, or SHA512.
Calculate Hash
Click the Calculate Hash button and wait for the hash to be computed. A progress bar shows the calculation status.
Verify or Copy
Optionally enter an expected hash to compare, or click Copy to copy the hash result to your clipboard.
Frequently Asked Questions
What is a file hash?
A file hash is a fixed-length string of characters generated by a cryptographic hash function from a file's content. It acts as a unique fingerprint for the file -- any change in the file, even a single bit, will produce a completely different hash value.
Which hash algorithm should I use?
For general file integrity checks, SHA256 is recommended as it offers a good balance of security and speed. MD5 is fast but has known collision vulnerabilities. SHA512 provides the highest security but may be slower for large files.
Is my file uploaded to a server?
No. All hash calculations are performed entirely in your browser using the Web Crypto API. Your file content never leaves your device, ensuring complete privacy and security.
Can I hash large files?
Yes. The tool reads files in chunks rather than loading the entire file into memory, making it efficient even for large files. Processing time depends on file size and the chosen algorithm.
How does hash comparison work?
When you enable compare mode, you can paste an expected hash value. The tool will compute the hash of your file and compare it against the expected value, telling you whether they match or not. Comparison is case-insensitive.
Is this tool free?
Yes, it is completely free to use with no registration, sign-up, or limits. You can use it as many times as you need for personal, educational, or commercial projects.