File Hash Calculator

AlgebraUppercase Output

You need to recalculate the conversion method or case.

After uppercase or cut conversion, click Recalculation.

Count Hash after selecting local files

This can be compared to the "validation of expectations" below; the algorithm needs to be recalculated.

Click or drag files hereSupport local files, large files will be read in segments

Hash.

Show after uploading files

Verify aspiration (optional)

Free online file hash calculator supporting MD5, SHA1, SHA256, SHA512 algorithms. Local chunk-based processing with known hash verification.

SHA-512 Hash

Base64 Diff Checker

PBKDF2 Key Derivation

SHA-256 Hash

JavaScript Formatter

Image to Base64

Use Cases

Verify downloaded file hash matches official checksum
Generate file fingerprints for archival records
Compare two files to confirm they are identical
Check if file was corrupted during transfer

Features

Multi-algorithm support: MD5, SHA1, SHA256, SHA512 family hash algorithms with one-click calculation
Local chunk processing: large files handled in chunks, browser-based calculation, files never uploaded
Hash comparison: input known hash to auto-verify match result with clear pass/fail indication
Uppercase/lowercase toggle: hex output format switching to match different platform requirements

How to Use

1.Click upload area or drag file onto the page
2.Select the hash algorithm (MD5/SHA1/SHA256/SHA512)
3.Tool automatically reads file in chunks and calculates hash
4.Paste known hash into 'Expected Value' field to verify match

FAQ

Does file hash calculation upload files to a server?

No. All hash calculations are performed locally in your browser. Files are processed in chunks and never uploaded to any server, ensuring complete file privacy.

What file sizes are supported?

The tool uses chunk-based reading, so theoretically any file size is supported. Large files may take more time depending on file size and your device performance.

How do I verify a downloaded file's integrity?

Upload the downloaded file, select the corresponding algorithm to calculate the hash, then compare the result with the official hash value. If they match, the file is intact and unmodified.

What is the difference between uppercase and lowercase hash values?

There is no difference, only the hexadecimal representation format. MD5, SHA256 and other hash values can be shown in uppercase or lowercase with identical content. Some platforms require specific formats.