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WasyTech
AvailableOpen SourceMIT

File Checksum Calculator

Verify file integrity locally. Zero uploads.

Calculate cryptographic hashes (SHA-256, SHA-512, etc.) for files directly in your browser. By leveraging Web Workers and the native Web Crypto API, this tool processes files locally at near-native speeds without ever uploading your data to a server.

  • Web
Open SourceLocal processingNo account

Downloads for this utility are being prepared.

Core features

Included in the free core utility.

  • 100% local client-side processing
  • Web Worker offloading for zero UI lag
  • Native Web Crypto API speeds
  • Constant-time expected hash comparison

Privacy & data handling

This utility processes data locally on your device wherever technically possible.

Processing
Local, on your device
Account
Not required
Internet
Works offline
Telemetry
No telemetry

Details

Category
Developer Tools
Platforms
Web
License
MIT

Frequently asked questions

What does Checksum Calc do?

Calculate cryptographic hashes (SHA-256, SHA-512, etc.) for files directly in your browser. By leveraging Web Workers and the native Web Crypto API, this tool processes files locally at near-native speeds without ever uploading your data to a server.

Is Checksum Calc free?

Yes. Checksum Calc is free to use.

Is Checksum Calc open source?

Yes. Checksum Calc is open source under the MIT license.

Does Checksum Calc require an account?

No. Checksum Calc does not require an account.

Does Checksum Calc send my data anywhere?

Checksum Calc has no telemetry. Processing happens locally on your device.

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