Checksum Checker

Drop any file to instantly compute MD5, SHA-1, SHA-256, SHA-512, and CRC32 checksums. Paste an expected hash to verify file integrity — all in your browser.

Hashing Mode

Best for files under ~500 MB on devices with enough RAM. Uses browser-native SHA and hash-wasm MD5/CRC32.

Upload File

Drop any file here

or click to browse

Any file type · Any size

Verify Checksum

Algorithm to verify

Paste expected checksum

Computed Checksums

No file selected

Upload any file to compute its checksums instantly.

Why Verify File Checksums?

Detect tampering — A checksum mismatch means the file was modified after the hash was published, either by corruption, a man-in-the-middle attack, or a fake mirror.

Confirm integrity — Software developers publish checksums alongside downloads so you can confirm the installer you received is byte-for-byte identical to what they shipped.

Which Algorithm Should I Use?

SHA-256 — Best choice for modern software verification. Used by Linux distributions, Python, and most open-source projects.

MD5 / CRC32 — Faster but not collision-resistant. Fine for detecting accidental corruption, not for security.