offlinewebtools.com browser-local workbench

File Checksums

Calculate MD5, SHA1, and SHA256 checksums to verify file integrity and detect changes

Shipped

Browser local

Select File for Checksum Calculation

128-bit hash, fast but less secure

160-bit hash, deprecated for security

256-bit hash, recommended for security

What this tool does

File Checksums helps you calculate MD5, SHA1, and SHA256 checksums to verify file integrity and detect changes.

What you get

File Checksums produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

Recent changes

2026-04-05

Added a one-click rescan action for checksum outputs so users can rerun quickly with the same file.

2026-04-03

Added machine-readable JSON and CSV checksum export formats for easier verification automation.

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Session file-tool analysis history

Keep a local, session-only record of successful file analyses in this browser session.

No analysis results yet. Run a file analysis to populate this panel.

Session download history

Re-download generated file outputs from this browser session.

No generated outputs yet. Use a file tool in this session to populate this panel.