How does the File Checksum Calculator work?

Drag a file onto the drop zone (or click to select one), choose one or more algorithms such as MD5, SHA-1, SHA-256 or SHA-512, and click Calculate. The checksum is computed locally in your browser using the Web Crypto API — the file is never uploaded.

Is the File Checksum Calculator free to use?

Yes, this tool is completely free with no signup required. Everything runs locally: the selected file is processed on your device and never sent to a server, ensuring complete privacy and security.

Which checksum algorithms are supported?

MD5, SHA-1, SHA-256 and SHA-512 are supported. SHA-256 is recommended for file integrity verification; MD5 and SHA-1 are provided for compatibility with older tools.

File Checksum Calculator

Calculate MD5, SHA-1, and SHA-256 checksums for files online. All calculations done locally in your browser for maximum privacy. Supports large file drag-and-drop.

Calculator

Select File

📄

Drag file here or click to select

Select Algorithm

MD5 SHA-1 SHA-256 SHA-512

Result:

📊 Result Chart

What is File Checksum Calculator?

File Checksum Calculator is a free online tool that runs entirely in your browser. No download or signup needed — select a file and a hash algorithm to get results instantly. All data is processed locally.

Use Cases

Verify file integrity after download or transfer
Confirm a downloaded file matches its published checksum
Detect accidental file corruption during copying
Compare two files to check whether they are identical

Key Features

Completely Free: No registration, no limits
Privacy Safe: Files never leave your browser
Cross-Platform: Any modern browser
Zero Dependencies: Open and use

File Checksum Calculator

Calculator

What is File Checksum Calculator?

Use Cases

Key Features

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