Calculate MD5, SHA-1 and SHA-256 checksums for any file and compare them against a published value to verify a download has not been tampered with.
File Hash Checker calculates MD5, SHA-1 and SHA-256 checksums for any file selected from your device, letting you compare the result against a value published by the file's source to confirm the download has not been corrupted or tampered with. This is the standard way software distributors and security-conscious users verify that a downloaded ISO, installer or archive matches exactly what was released.
The file is read and hashed locally in your browser using the same cryptographic algorithms used by command-line tools like certutil, md5sum and shasum, so the result is directly comparable to values published on a download page or in a release note. Because hashing happens on-device, even very large files such as operating system images can be verified without uploading gigabytes of data anywhere.
MD5, SHA-1 and SHA-256 are all calculated together, so whichever checksum format the publisher provided, you have a matching value ready to compare.
Because hashing runs locally, even multi-gigabyte disk images or installers can be verified without waiting for an upload to complete.
The file itself never leaves your device — only the resulting hash values, which are just short strings, are ever shown on screen.
Results match what you would get from certutil, md5sum or shasum, so the check is trustworthy for verifying software releases.
A matching hash proves the downloaded file is byte-for-byte identical to the one the publisher released, ruling out network corruption, an interrupted download, or a tampered mirror serving a modified file.
No — the file is read and hashed entirely within your browser using built-in cryptographic functions, so nothing about the file's contents is sent to any server, which is why even very large files can be checked without a lengthy upload.
MD5 and SHA-1 are fast but considered cryptographically weak for security purposes, though they remain fine for simple integrity checks such as confirming a transfer completed correctly. SHA-256 is the modern standard and is what most security-conscious software distributors now publish.
A mismatch means the file differs from the published original in some way — re-download it from the official source, and if the mismatch persists, treat the file as untrustworthy and do not run or open it.
A matching hash proves the file is byte-for-byte identical to what the publisher released, ruling out corrupted transfers and tampered mirrors.
No. The file is read locally and hashed in your browser, so even large or confidential files never leave your device.
Yes. File Hash Checker on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.
Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.
Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.