Drag and drop the file here

It supports calculating multiple files at once, or you can click to select a file.

The file is calculated locally in the current browser and is not uploaded to the server.

You can select to calculate CRC, MD5, SHA, SHA3, and SM3 as needed to reduce CPU usage when dealing with large files.

Computational Algorithm

Only the selected items are counted, which can reduce CPU usage when dealing with large files.

Calculation results

There are no files yet. Drag them in and the summary values ​​will be displayed here.

Tool Introduction

This is a file hash calculator that runs purely in your browser. It can be used to calculate common digest values ​​for files, such as MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3, SM3, and CRC. It is suitable for verifying downloaded files, comparing hash values, checking if files have been modified, or performing basic data integrity verification.

Unlike online tools that require uploading files to a server, this page reads and calculates file summaries directly in your browser. The files themselves are not sent to a remote server, making it more suitable for scenarios where privacy and local processing are required.

Operating Instructions

  1. Drag the file to the area above, or click "Select File" to import a local file.
  2. Expand the algorithm options as needed, and select only the MD5, SHA, SHA3, SM3, or CRC algorithms you need.
  3. Wait for the page to complete the calculation locally; the result will be automatically displayed below.
  4. Clicking the "Copy" button will quickly copy the hash value of the corresponding algorithm for comparison.
  5. If you need to reduce the computational burden of large files, you can keep only a small number of commonly used algorithms.

File hash calculation
File Hash Value Calculator

File hash values ​​are commonly used for software installation package verification, compressed file integrity verification, downloaded file authenticity checks, backup file consistency confirmation, and content comparison during development and testing. Common uses include verifying MD5 or SHA-256 values ​​provided by the official website, verifying file consistency before and after transmission, and quickly determining whether two files have the same content. For simple file verification, SHA-256 is usually preferred; if compatibility with historical release notes is required, MD5 or SHA-1 can also be used; for domestic scenarios, SM3 can be chosen; and for fast checksum purposes, CRC32 or CRC32C can also be used.