What can I do with File Checksum?

Compute SHA-256 checksums for local files. File Checksum is part of the Security shelf on utils.sbs and is designed for quick, one-off tasks.

Is File Checksum free to use?

Yes. File Checksum is free, requires no account, and has no per-file or per-use charge.

Are my files uploaded when I use File Checksum?

No. File Checksum is designed to process your input locally in the browser. Files are not uploaded to a server for processing.

What formats does File Checksum support?

It uses the browser APIs available for that task and returns the result directly in the page.

Can I use File Checksum on my phone?

Yes. File Checksum is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.

Security tool

File Checksum

Compute SHA-256 checksums for local files.

Runs on-deviceNo sign-upFree

All security tools

Workspace

File Checksum

Runs locally

Choose a file to checksumAny file type · never uploaded

Hashes are computed with the native Web Crypto API. For release verification, compare against the published checksum.

Checksum

The guide

By the utils.sbs team · Reviewed November 2026 · How we build and review tools

Quick answer

File Checksum is a free browser-based security tool. Compute SHA-256 checksums for local files. It runs with browser APIs locally, requires no account and does not upload your files. Open the page, add your input, adjust any options and download the result.

What is File Checksum?

File Checksum is a free browser-based security tool from utils.sbs. Compute SHA-256 checksums for local files. It is built for quick, focused jobs: open the page, add your input, adjust the options and take the result with you. No account, install or server upload is required.

At a glance

Category	Security
Input	Depends on the tool; usually browser input or a file
Output	A result shown in the page or downloaded as a file
Engine	browser APIs
Processing	In your browser
Price	Free
Account	Not required

How File Checksum works

This utility runs entirely in your browser and does not depend on a backend service for its result.

How to use File Checksum

1Open File Checksum and add your input.
2Use the default settings, or choose the format or detail level that matches your goal.
3Run the tool, check the preview or result, and download the output.

When to use File Checksum

Handle a quick browser or system task without installing an app.
Inspect or test something directly in the current tab.
Get a focused utility result without a sign-up flow.

Limitations

Capabilities depend on the browser APIs available on the current device.

Privacy and accuracy

File Checksum processes its input in the browser whenever the platform API allows it. Files and values are not uploaded to a server for processing, and the tool does not require an account. For calculations, use the result as a reference and verify important decisions against the source formula or a qualified professional. Read our methodology.

FAQ

File Checksum questions

What can I do with File Checksum?
Compute SHA-256 checksums for local files. File Checksum is part of the Security shelf on utils.sbs and is designed for quick, one-off tasks.
Is File Checksum free to use?
Yes. File Checksum is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use File Checksum?
No. File Checksum is designed to process your input locally in the browser. Files are not uploaded to a server for processing.
What formats does File Checksum support?
It uses the browser APIs available for that task and returns the result directly in the page.
Can I use File Checksum on my phone?
Yes. File Checksum is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.

Keep going

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