SHA-256 Checksum & File Hash Checker – Free Online Tool
Calculate SHA-256, SHA-512, SHA-384, and SHA-1 hashes for files or text locally, compare expected checksums, and export a verification manifest.
Free SHA-256 Checksum Tool
ToolsMint File Hash Checker calculates SHA-256 checksums for files and text directly in your browser. It is useful when a software vendor, Linux distribution, backup system, or release page publishes a checksum and you need to confirm your downloaded file matches it.
Verify File Hashes Without Uploading Files
Installers, documents, archives, ISO images, and backups can be private or sensitive. This checksum verifier reads the file locally with the browser crypto API and does not upload the file to ToolsMint. You get the hash without sending the file away.
Batch File Hash Manifest Export
For folders of release files, archives, or client deliverables, batch-check multiple files and download a plain TXT manifest or JSON report. The manifest format makes it easy to store hashes with release notes, QA records, backup logs, or handoff documentation.
Smarter Checksum Comparison
The tool ignores spaces and common labels such as SHA256: when comparing expected checksums. It also flags invalid expected values, warns about very large files, and explains when SHA-1 is only suitable for old compatibility checks rather than modern security proof.
How to Use SHA-256 Checksum & File Hash Checker
- 1
Choose one or more files
- 2
Keep SHA-256 selected or choose SHA-512, SHA-384, or SHA-1 if the publisher provides that value
- 3
Paste the expected checksum from the official download page
- 4
Calculate and look for the match or mismatch status
Frequently Asked Questions
Everything you need to know about the SHA-256 Checksum & File Hash Checker.
Is this SHA-256 checksum checker free?
Yes. It is free to use with no signup, no watermark, and no account limit.
Are my files uploaded to a server?
No. Files are read locally in your browser and hashed with browser crypto APIs. ToolsMint does not upload, store, or process your files on a backend server.
Which checksum algorithm should I use?
Use SHA-256 for most download verification workflows. SHA-512 is also strong. SHA-1 is included for older checksum pages, but it is not recommended as a modern security guarantee.
Can I compare a published checksum?
Yes. Paste the expected checksum before calculating. The tool will show whether the generated hash matches, differs, or whether the expected value is not valid hexadecimal text.
Can I hash multiple files at once?
Yes. Select multiple files, calculate their hashes, then copy the manifest or download TXT and JSON reports.
Does a matching checksum prove a file is safe?
A matching checksum proves the bytes match the published checksum. It does not prove the publisher is trustworthy. Download from official sources and prefer signed releases when available.