# File Hash & Checksum Calculator

> Compute SHA-256, SHA-384, SHA-512 or SHA-1 for any file and verify it against a checksum.

A file checksum is a fixed-length fingerprint of the file's exact bytes. Comparing it to the value a publisher listed proves the download arrived complete and unaltered. This calculator hashes files with SHA-256, SHA-384, SHA-512 or SHA-1 in your browser and can verify against a checksum you paste.

**URL:** https://convertto.tech/t/file-hash-calculator
**Category:** Hash & Crypto Tools (https://convertto.tech/c/crypto-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Select your files — the file stays on your device and is never uploaded.
2. Choose the algorithm.
3. Enter or paste your expected checksum.
4. Press Run, then download the result when it is ready.

## FAQ

### What does a mismatch mean?

The file is not the one the checksum was published for. Most often it is an incomplete download or a different release version. It can also mean the file was modified in transit — so do not run an installer whose checksum fails.

### Are my files uploaded?

No. Hashing happens through the browser's WebCrypto API on your own device. That is also why there is no size limit beyond your available memory.

## Related tools

- [SHA-256 Hash Generator](https://convertto.tech/t/sha256-hash-generator): Generate a secure SHA-256 hash from any text, in hex and Base64.
- [MD5 Hash Generator](https://convertto.tech/t/md5-hash-generator): Generate an MD5 hash from any text — instantly and entirely in your browser.
- [SHA-384 Hash Generator](https://convertto.tech/t/sha384-hash-generator): Generate a SHA-384 hash — a truncated SHA-512 used in TLS cipher suites.
- [SHA-512 Hash Generator](https://convertto.tech/t/sha512-hash-generator): Generate a 512-bit SHA-512 hash — the widest digest in the SHA-2 family.
- [SHA-1 Hash Generator](https://convertto.tech/t/sha1-hash-generator): Generate a SHA-1 hash from text — 160-bit digest, computed locally.
- [Bcrypt Hash Generator](https://convertto.tech/t/bcrypt-hash-generator): Hash a password with bcrypt at a configurable cost factor — the right way to store passwords.
- [CRC32 Checksum Calculator](https://convertto.tech/t/crc32-checksum): Calculate a CRC32 checksum — the fast error-detection code used in ZIP and PNG files.
- [JWT Verifier](https://convertto.tech/t/jwt-verifier): Verify a JWT's HS256 signature and its expiry, issuer and audience claims, entirely in your browser.