Online Math Tools
Online Math Tools is the OnlineTools.com sub-site for math — number sequence generators, fractals, space-filling curves, constants, matrix operations, and visualisations.
Number Theory & Sequences(22)
Abundant Numbers
Generates abundant numbers (those exceeding the sum of their divisors).
Baum-Sweet Sequence
Generates the Baum-Sweet binary sequence.
Deficient Numbers
Generates deficient numbers (those less than the sum of their divisors).
Factorial Calculator
Computes the factorial of a given non-negative integer.
Fibonacci Primes
Lists Fibonacci numbers that are also prime.
Fibonacci Test
Tests whether a number belongs to the Fibonacci sequence.
Find All Divisors
Lists every integer factor of a given number.
Find Prime Factors
Computes the prime factorisation of any number.
Generate Even Numbers
Generates a sequence of even integers.
Generate Fibonacci Numbers
Generates Fibonacci numbers.
Generate Lucas Numbers
Generates Lucas number sequences.
Generate Negafibonacci
Generates Fibonacci numbers extended to negative indices.
Generate Prime Numbers
Generates a list of prime numbers.
Gijswijt's Sequence
Generates the self-referential Gijswijt sequence.
Kolakoski Sequence
Generates the self-describing Kolakoski sequence.
Look-and-Say Sequence
Generates the look-and-say (Conway) sequence.
Negalucas Numbers
Extends Lucas numbers to negative indices.
Paperfolding Sequence
Generates the paperfolding (dragon curve) sequence.
Perfect Numbers
Generates perfect numbers (equal to the sum of their divisors).
Prime Number Test
Tests whether a number is prime.
Rudin-Shapiro Sequence
Generates the Golay-Rudin-Shapiro binary sequence.
Thue-Morse Sequence
Generates the Prouhet-Thue-Morse binary sequence.
Math & Numbers(20)
Cantor Set
Generates the classic Cantor set fractal.
Dragon Curve
Generates the Harter-Heighway dragon curve fractal.
Generate Golden Ratio Digits
Generates digits of the golden ratio φ to arbitrary precision.
Generate Pascal's Triangle
Generates Pascal's Triangle of binomial coefficients.
Generate Pi Digits
Generates digits of π to arbitrary precision.
Generate e Digits
Generates digits of Euler's constant e to arbitrary precision.
Gosper Curve
Generates the Peano-Gosper space-filling curve.
H-fractal
Generates the H-tree structural fractal.
Hilbert Curve
Generates the Hilbert space-filling curve fractal.
Koch Snowflake
Generates the Koch snowflake fractal.
L-system Generator
Visualises Lindenmayer rewrite system rules into recursive graphics.
Moore Curve
Generates the Moore space-filling curve.
Peano Curve
Generates the Peano space-filling curve fractal.
Pythagoras Tree
Generates the Pythagoras tree fractal.
Sierpinski Arrowhead Curve
Generates the Sierpinski arrowhead curve fractal.
Sierpinski Carpet
Generates the Sierpinski carpet fractal.
Sierpinski Hexagon
Generates the Sierpinski hexaflake fractal.
Sierpinski Pentagon
Generates the Sierpinski pentaflake fractal.
Sierpinski Triangle
Generates the Sierpinski sieve triangle fractal.
Z-order Curve
Generates the Morton Z-order space-filling curve.
Linear Algebra & Vectors(8)
Add Matrices
Sums multiple matrices element-wise.
Identity Matrix
Generates an identity matrix with ones on the diagonal.
Invert Matrix
Computes the inverse of a matrix.
Matrix Determinant
Computes the determinant of a square matrix.
Multiply Matrices
Multiplies two matrices using standard matrix multiplication.
Random Matrix
Generates a matrix populated with random elements.
Subtract Matrices
Finds the element-wise difference of two matrices.
Transpose Matrix
Swaps the rows and columns of a matrix.