Number Tools

The Fibonacci Prime Test checks if numbers are both Fibonacci and prime. Just paste your numbers or import them from a file, and the tool instantly shows you which ones…

The Fibonacci Number Test helps you quickly check whether a list of numbers are part of the Fibonacci sequence. Just paste or import a list, and the tool will flag…

Need a sequence that goes below zero? The Generate Negafibonacci Numbers tool creates symmetrical Fibonacci sequences that include negative indices. Unlike the regular Fibonacci series, the Negafibonacci version mirrors backward…

Working with Roman numerals like XIV, XL, or MMMCMXCIX? The Convert a Roman Number to Regular Number tool helps you turn them back into plain integers instantly. Whether you’re decoding…

Want to change regular numbers into classic Roman numerals? The Convert a Number to Roman Number tool does that in real time. Whether you’re working with 1, 44, or even…

Have a list of ordinals like 1st, 21st, or 111th and want to turn them back into plain numbers? The Convert an Ordinal to a Number tool handles that instantly…

Turn numbers like 1, 21, or 1000 into ordinals like 1st, 21st, and 1000th in just a click. The Convert a Number to an Ordinal tool gives you fast, accurate…

Want to break down the details of any integer fast? The Analyze a Number tool does exactly that. Just type or paste a number, and you’ll instantly get insights like…

Split a list of numbers into n-grams of any size with total control over overlap, spacing, and duplicates. The Generate Number N-grams tool gives you a clean way to break…

Want to break a sequence of numbers into chunks of three? The Generate Number Trigrams tool makes that simple. Just paste your numbers, choose your settings, and instantly get every…