01
Choose an algorithm
Select SHA-256, SHA-384, or SHA-512 and optionally paste a trusted expected hash.
File Hash Generator
Calculate SHA-256, SHA-384, or SHA-512 checksums for files locally and compare an expected hash.
A matching hash can confirm that bytes match an expected value. It does not prove a file is safe, trustworthy, or free of malware.
Your data is processed locally in your browser whenever supported and is not uploaded to our servers.
How it works
Calculate a file hash in three steps
02
Choose your files
Select up to ten files. Their bytes are read and hashed locally in the browser.
03
Copy or compare
Copy individual checksums or confirm whether one file matches an expected value.
Private integrity checks
Verify bytes without uploading the file.
A cryptographic digest acts as a compact fingerprint for exact file contents. Even a small byte change normally produces a different checksum.
Modern SHA algorithms
Uses the browser Web Crypto implementation of SHA-256, SHA-384, and SHA-512.
Expected-hash comparison
Validates hexadecimal length for the selected algorithm before showing match or mismatch.
Multiple files
Generate checksums for as many as ten files in one sequential local operation.
No file upload
Files are read into browser memory and are never sent to Got A Tool for hashing.
FAQ
Common questions
What is a file hash?
A hash is a fixed-length digest calculated from a file's bytes. The same bytes and algorithm produce the same digest, while changed bytes normally produce a different one.
Which algorithm should I use?
Use the algorithm published by the file provider so the values can be compared. SHA-256 is the most common general choice; SHA-384 and SHA-512 produce longer digests.
Why is MD5 not included?
MD5 has known collision weaknesses and should not be chosen for modern security-sensitive integrity verification. This tool focuses on SHA-2 algorithms supported by Web Crypto.
Does a matching hash prove a file is safe?
No. It only confirms that the bytes match the expected digest. A malicious file can also have a correctly published hash, so this is not antivirus or trust verification.
Are my files uploaded?
No. Hashing runs locally in your browser. Files up to 100 MB are read into device memory and are not sent to Got A Tool.
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