🔢 Mathematics

🔗Arithmetic & Geometric Sequence Calculator Find the nth term and the sum of the first n terms of an arithmetic or geometric sequence, free online. ➗Average Calculator Calculate the average (mean) of a list of numbers, free online. 🔢Basic & Scientific Calculator — Free Online Free online calculator with standard and scientific modes — trig, logs, memory and more, right in your browser. ⭕Circle Calculator — Area, Circumference Calculate the diameter, circumference and area of a circle from its radius, free online. ℂComplex Number Calculator Add, subtract, multiply or divide complex numbers and get modulus and argument, free online. 🧮Cubic Equation Solver Solve ax³ + bx² + cx + d = 0 for all real and complex roots, free online. 📍Distance & Midpoint Calculator Find the distance, midpoint and slope between two points on a plane, free online. 🔭Engineering Notation Converter Convert any number to engineering notation (exponent in multiples of 3) with its SI prefix, free online. !Factorial Calculator (n!) Compute the factorial of any number from 0 to 20 instantly, free online. ½Fraction Calculator — Add, Subtract, Multiply, Divide Add, subtract, multiply or divide fractions online, with results automatically simplified. ÷GCD & LCM Calculator — Greatest Common Divisor Find the greatest common divisor (GCD) and least common multiple (LCM) of two numbers instantly, free. ㏒Logarithm Calculator — ln, log10, Any Base Calculate natural log, log base 10, or logarithms in any base, free online. ⊞Matrix Calculator — Add, Subtract, Multiply 2×2 Add, subtract, multiply 2×2 matrices or find the determinant, free online. 🍰Mixed Number ⇄ Decimal Calculator Convert a mixed number to a decimal and improper fraction, or a decimal to a mixed number, free online. ➗Modulo & Remainder Calculator Find the remainder, quotient and mathematical modulo of two numbers, free online. 01Number Base Converter — Binary, Octal, Hex, Decimal Convert numbers between binary, octal, decimal and hexadecimal instantly, free online. %Percentage Calculator — Find %, % Change, % Of Calculate percentages, percentage change, and "what percent is X of Y" instantly, free online. 📉Percentage Increase/Decrease Calculator Calculate the percentage increase or decrease between two numbers, free online. 𝑛Permutation & Combination Calculator (nPr, nCr) Calculate permutations (nPr) and combinations (nCr) for any n and r instantly, free online. √Power & Square Root Calculator Calculate exponents and square roots online for free. Enter any base and exponent, or find a square root. 𝑝Prime Number Checker — Is It Prime? Check instantly whether any number is prime with this free online prime number checker. 📐Pythagorean Theorem Calculator Find the missing side of a right triangle using the Pythagorean theorem, free online. 𝑥²Quadratic Equation Solver — ax² + bx + c = 0 Solve any quadratic equation instantly and see real or complex roots, free online. 🎲Random Number Generator Generate random whole numbers in any range, free and instant. ∶Ratio Calculator — Simplify or Solve Proportions Simplify any ratio or solve a proportion (a:b = c:d) instantly, free online. ⬡Regular Polygon Calculator Find the area, perimeter, interior angle, apothem and diagonals of any regular polygon, free online. 🏛️Roman Numeral Converter Convert numbers to Roman numerals and Roman numerals back to numbers, free online. 🎯Rounding Calculator Round a number to any decimal place or to the nearest 10, 100 or 1000, plus floor, ceiling and truncation, free online. 🔬Scientific Notation Converter Convert any number to scientific notation, free online. ➕Series Sum (1 to n) Calculator Sum the first n natural numbers, squares, cubes, odd numbers or even numbers with closed-form formulas, free online. 🔢Significant Figures Calculator Round a number to a chosen number of significant figures, free online. 📈Slope & Line Equation Calculator Get the slope, intercept, angle and equation of the line through two points, free online. 🧊Sphere, Cylinder & Cone Volume Calculator Calculate the volume and surface area of a sphere, cylinder, cone or cube, free online. 📊Statistics Calculator — Mean, Median, Mode, StdDev Calculate mean, median, mode, standard deviation, variance and range from any list of numbers. 🔺Triangle Area Calculator Calculate the area of a triangle from its base and height, free online. ∠Trigonometry Calculator — Sin, Cos, Tan Calculate sine, cosine and tangent for any angle in degrees or radians, free online. 🧭Vector Calculator (2D / 3D) Calculator Dot product, cross product, magnitudes and the angle between two vectors, free online.