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🔢 Math Calculators

Math calculators for percentages, fractions, statistics, geometry, and number theory.

Triangle Calculator
Calculate the third side, area, and perimeter of a triangle using two sides and the included angle.
Statistics Calculator
Calculate mean, median, mode, and standard deviation for a set of numbers.
Standard Deviation Calculator
Calculate the standard deviation, mean, median, mode, and count for a dataset.
Scientific Notation Calculator
Convert numbers to and from scientific notation and extract the coefficient and exponent.
Ratio Calculator
Solve proportions and simplify ratios by finding the missing value in A:B = C:D.
Quadratic Formula Calculator
Solve quadratic equations of the form ax² + bx + c = 0 using the quadratic formula.
Pythagorean Theorem Calculator
Solve for any side of a right triangle using the Pythagorean theorem.
Prime Number Calculator
Check if a number is prime and find all its prime factors.
Percentage Calculator
Calculate the percentage of a value or find what percent one number is of another.
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and Roman numeral formats.
Modulo Calculator
Calculate the remainder and quotient when dividing one number by another.
Logarithm Calculator
Calculate logarithms for any base, including natural log (ln) and log base 10.
LCM & GCD Calculator
Find the Least Common Multiple and Greatest Common Divisor of two numbers.
Geometry Area Calculator
Calculate the area of common shapes including circles, rectangles, triangles, and trapezoids.
Fraction Calculator
Add, subtract, multiply, and divide two fractions with step-by-step results.
Factorial Calculator
Calculate the factorial of any integer from 0 to 20.
Exponent Calculator
Raise a base number to any exponent (power) and get the result instantly.
Cube Root Calculator
Find the cube root, square root, and square of any number.
Circle Calculator
Calculate the area, circumference, and diameter of a circle from its radius.
Average Calculator
Calculate the mean, sum, count, minimum, and maximum of a list of numbers.