SEERSeerKits

Calculate File Hash Online

Compute SHA-256, SHA-1, and MD5 checksums to verify downloads and detect duplicates. Purely local — files never leave your browser.

Local Processing

Drag and drop your file here

or click to browse from your device

*

Maximum file size: 500 MB

Import fromOneDrive URLs supported

Supported Formats

File types you can use with File Hash.

Supported Input Formats

*

Available Output Formats

txt

Usage Limits

Free tier limits for File Hash on the web.

  • Max file size

    500 MB per file

  • Daily free uses

    30 conversions per day

  • Batch limit

    Up to 10 files at once

Need more? Try the Seer app for expanded limits.

Privacy & Processing

Related Tools

File Archive
Bundle files into ZIP or unpack archives without installing utilities. Runs locally when supported — free for archives under 500 MB total.
Open tool →

How to Use

How to calculate file hash with SeerKits

  1. 1

    Select your file

    Choose any file from your device — hashing works on binaries, archives, and documents alike.

  2. 2

    Pick algorithms

    Enable SHA-256, SHA-1, or MD5 depending on what your download page or colleague provided.

  3. 3

    Copy the digest

    Compare the result with the published checksum. Mismatch means the file changed in transit or was corrupted.

Need more power?

Take File Hash further with Seer File

The web tool is perfect for quick jobs. When you need bigger files, batch workflows, or pro-grade controls, continue in the Seer app ecosystem — same privacy-first approach, more headroom.

  • Larger file limits beyond the web free tier
  • Batch processing for multiple files at once
  • Advanced codec and quality options
  • Offline processing when you need it on the go
Download Seer File

Frequently Asked Questions

Which hash algorithm should I use?
SHA-256 is the modern default for security and integrity checks. MD5 remains common for legacy compatibility but is not collision-resistant for untrusted inputs.
Does hashing upload my file?
Never — SeerKits reads the file from disk through the browser File API and computes digests entirely on your device.
Can I hash multiple files and compare?
Add up to ten files per session on the free web tier. Batch reporting and CSV export are available in Seer File.