Latest Tools

Zero-pad a Number takes each number you enter and adds leading zeros until it matches the length you specify. Whether you need numbers formatted for alignment, database consistency, or coding…

Mirror a Number flips each number you enter, reversing the digits so the number reads backwards. It’s a simple tool that’s perfect for fun formatting, code experiments, or number puzzles.…

Repeat a Number lets you take each number and duplicate it multiple times with your chosen separator. It’s perfect for generating repetitive sequences, simulating patterns, or prepping data and everything…

Create Zalgo Numbers transforms your plain digits into creepy, glitch-filled characters by stacking them with random Unicode marks. Whether you’re styling something weird, spooky, or just broken-looking, this tool makes…

Split a Number into Digits breaks down each number into individual digits using whatever separator you choose. Whether you’re formatting, analyzing, or visualizing digits, this tool makes it super quick…

Group Number Digits helps you chunk long strings of digits into easier-to-read groups. Whether you’re formatting phone numbers, account codes, or raw data, it’ll break them up just how you…

Calculate the Modulo helps you compute remainders quickly from expressions like “17 % 5” or “100 % 9.” Just type them in, and the tool handles the rest. It can…

Test If a Number Is Deficient lets you quickly figure out which numbers don’t measure up meaning their divisor sum is less than the number itself. Just paste in your…

Test If a Number Is Abundant is a quick way to check if numbers have a sum of divisors greater than themselves the hallmark of abundant numbers. It gives you…

Ever wondered if a number is perfect or not? Test If a Number Is Perfect gives you a fast way to check. Just paste in some numbers, and the tool…

This tool generates a list of composite numbers based on how many you want. Composite numbers are integers greater than 1 that are not prime they have more than two…

This tool calculates the binary sequence behind the dragon curve, a classic fractal pattern. Each term is built by flipping and appending the previous string in a recursive way. You…

This tool generates a list of excessive numbers, also known as abundant numbers. These are integers whose proper divisors (excluding the number itself) add up to more than the number…

This tool creates a list of almost perfect numbers based on how many you want to see. An almost perfect number is one where the sum of its proper divisors…

This tool lets you generate any number of Thue-Morse terms and see the output live. The sequence is built by calculating the parity of 1s in the binary form of…

This tool generates Baum-Sweet Numbers up to any count you choose. These values are binary-based: for each non-negative integer, the tool checks the binary string for blocks of zeros and…

This tool creates Rudin-Shapiro Numbers based on the count you enter. It uses each number’s binary form to decide the output. The moment you change the input or toggle a…

This tool creates the Gijswijt sequence based on your input count. You control how the results appear with options to add index numbers and switch between line-by-line or inline formatting.…