File Hash Calculator
Calculate MD5, SHA-1, SHA-256, and SHA-512 checksums for a file directly in your browser. Use the results to compare downloads or verify file integrity. Hashing is performed locally on your device.
How to Use
- 1Select a file – drag it onto the drop zone or click to browse your computer.
- 2The tool automatically reads the file and calculates all four hashes. A progress bar shows how far the read has gone.
- 3Once complete, the four hash values are displayed. Use the individual copy buttons or the “Copy All” button to grab the results, or download them as a .txt file.
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Frequently Asked Questions
Is my file uploaded to a server?
No. The entire hashing process uses only your browser’s File API and cryptographic libraries. No data is transmitted anywhere.
What is the largest file I can hash?
Practical size depends on your browser and available memory because the SHA calculations use the complete file buffer. For very large multi-gigabyte files, a desktop hashing utility may be more suitable.
Why is MD5 included if it’s considered insecure?
MD5 is still widely used for quick integrity checks and non‑security‑critical comparisons. For scenarios where security matters, use SHA‑256 or SHA‑512. The tool gives you the choice.