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IBAN Validator

Check whether an IBAN is correctly formatted and passes its checksum.

.htaccess Redirect Generator

Generate .htaccess redirect rules for Apache servers.

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TSV ⇄ CSV Converter

Convert between tab-separated and comma-separated values.

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Hash Identifier

Paste a hash and see which algorithm it most likely comes from.

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Credit Card Number Validator

Check a card number with the Luhn algorithm, in your browser only.

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Checksum & CRC Calculator

CRC-32, Adler-32, MD5 and SHA checksums of any file or text, calculated in your browser.

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MAC Address Lookup

Find the manufacturer of a device from its MAC address using the IEEE OUI registry.

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