File Hash Calculator

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files in your browser. Pick the algorithms you need, drag in any file, and copy each result with one click.

About File Hash Calculator

Overview

The File Hash Calculator computes MD5, SHA-1, SHA-256, and SHA-512 fingerprints for any text or file you give it. It runs entirely in your browser, so the bytes never leave your device. Pick whichever algorithms you need and get every hash at once, with one-click copy for each result. Large files are read in small chunks so the page stays responsive even for multi-hundred-megabyte inputs.

Features

  • Computes MD5, SHA-1, SHA-256, and SHA-512 at the same time.
  • Pick exactly which algorithms you need with checkboxes.
  • Accepts text input, file drag-and-drop, and the clipboard.
  • Reads large files in chunks so the browser never freezes.
  • One-click copy for each hash result.
  • Live mode updates results as you type.
  • All work is done in your browser to keep your data private.
  • Dark mode and mobile-friendly layout.
  • Supports files up to 100MB.

How to Use

  1. Type or paste text into the input box, or drag a file onto the drop zone.
  2. Tick the checkboxes for the algorithms you want (MD5, SHA-1, SHA-256, SHA-512).
  3. Watch the hashes appear in real time, or click "COMPUTE HASHES" with live mode off.
  4. Click the copy button next to any hash to copy that result to the clipboard.
  5. Use "Clear" to reset the input and results.

FAQ

How is this different from the MD5 or SHA-256 generator?

The single-algorithm generators are tuned for one hash at a time. This calculator lets you pick any combination of MD5, SHA-1, SHA-256, and SHA-512 and computes all selected hashes from the same input in a single pass, which is faster for large files.

Is my file uploaded to a server?

No. The hashing runs entirely in your browser. The file is read with the FileReader and Blob APIs, passed to a local JavaScript or Web Crypto hasher, and never sent over the network.

Why is MD5 still included if it is broken?

MD5 is broken for collision resistance, but it is still widely used for non-security checksums: verifying downloads, deduplicating files, and matching legacy records. Keep it for those uses, not for passwords or signatures.

What is the largest file I can hash?

Up to 100MB. Larger files are read in 2MB chunks, so the page stays responsive. If you need bigger files, split them first and hash the pieces separately.