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File Hash Calculator

Calculate the hash of a file — useful for verifying a download wasn't corrupted or tampered with.

Click to choose a file or drag and drop it here

Choose a file to see its hash.

Need CRC-32, Adler-32 or MD5, or want to compare against a checksum you were given? Try the Checksum & CRC Calculator — it shows all common checksums for a file at once. This File Hash Calculator stays focused on the SHA family (SHA-1, SHA-256, SHA-512), one at a time.

Subnet / CIDR Calculator

Calculate subnet mask, network range, and host count, for IPv4 and IPv6.

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HTTP Status Code Lookup

Look up the meaning of any HTTP status code.

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Regex Tester

Test a regular expression against text with matches highlighted.

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JSON Minifier

Remove whitespace from JSON to reduce its size.

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YAML ⇄ JSON Converter

Convert between YAML and JSON.

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Cron Expression Generator

Build and explain a cron expression.

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Running into a technical issue or something that doesn't work right on this page? Please let us know straight away via our Contact page — that's how we find out what's broken and get it fixed.