Generate passwords, UUIDs, codes and random data. — 19 free tools.
Generate strong, random passwords with custom rules.
★Generate a random numeric PIN.
★Generate a random 6-digit one-time code (for demos).
★Generate random RFC-4122 version-4 UUIDs.
★Generate a random number in a range.
★Generate a random alphanumeric string.
★Roll one or more dice with any number of sides.
★Flip a virtual coin – heads or tails.
★Generate random unique lottery numbers.
★Generate a random color with its hex and RGB values.
★Generate a random IPv4 address.
★Generate a random MAC address.
★Generate fun, random usernames.
★Generate a random hex token / API-style key.
★Let the tool decide – a random Yes or No.
★Pick a random letter of the alphabet.
★Pick random emojis.
★Pick a random winner from a list of names.
★Validate a card number with the Luhn checksum.
Browse CalculatorFC tools in this topic. Each calculator includes a clear formula, examples, FAQs, schema markup, related internal links and practical guidance for users, Google Search and AI answer engines.
Author: CalculatorFC Editorial Team
Reviewed by: CalculatorFC Accuracy Review Desk
Last updated: June 23, 2026
Editorial policy: We explain formulas, assumptions, limitations and examples in plain language and update pages when methods, rates or standards change.
Fact-checking policy: Calculator formulas are reviewed against standard mathematical, financial, scientific or public reference methods where applicable.
Sources: Standard formulas, official government references where relevant, public methodology references and calculator-specific documentation.
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