Math

Difference of Squares Calculator

Enter two values, a and b, to automatically calculate the difference of squares (a+b)(a-b) and simplify your algebraic calculations.

Resistor, Capacitor & Inductor Unit Converter

Online unit conversion tool for resistors, capacitors, and inductors.

Weighted Average Calculator

Quickly calculate the weighted average by entering values and their corresponding weights. Supports unlimited data sets.

Prime Factorization Calculator

Enter any positive integer to instantly calculate its prime factorization. Get prime number verification and detailed step-by-step results with this free online calculator.

Coefficient of Variation Calculator

Calculate the coefficient of variation (CV) from your dataset to easily assess relative dispersion and data volatility. Free online statistics calculator.

Parabola Equation Solver

Input three point coordinates to quickly find the parabola's standard form, vertex coordinates, and axis of symmetry.

Addition Table Up to 10

Provides an addition table up to 10 in image format, available for printable download.

Rectangular Prism (Cuboid) Calculator

Enter length, width, and height to instantly calculate the base area, lateral surface area, total surface area, volume, and total edge length of a rectangular prism.

Pythagorean Theorem Calculator

Enter any two sides of a right triangle to instantly calculate the length of the third side.

Modulo Calculator

Calculate the remainder of two numbers after division. A free online modulo calculator supporting both positive and negative integer modulo operations.

Root Mean Square (RMS) Calculator

Quickly calculate the Root Mean Square (RMS) of a dataset online. Perfect for signal analysis, AC effective values, and engineering calculations.

Subtraction Chart Generator (Up to 10)

Quickly generate a subtraction chart up to 10. Supports printing and PDF downloads.

Continued Fraction Calculator

Free online continued fraction calculator. Expand any real number or fraction into a continued fraction, or convert a sequence back into a rational number. Instantly calculate convergents and best rational approximations.

Point to Line Distance Calculator

Free online point to line distance calculator. Quickly calculate the perpendicular distance from a point to a line using two-point or general equation (Ax+By+C=0) forms.

Normal Distribution Calculator

Input mean and standard deviation to quickly calculate the cumulative probability or quantile corresponding to a value.

Complex Number Calculator

Free online complex number calculator. Add, subtract, multiply, and divide two complex numbers instantly. Perfect for circuit analysis and signal processing.

Cone Calculator

Free online cone calculator to quickly find the volume, surface area, lateral surface area, and base area of a cone.

Perfect Square Expansion Calculator

Quickly expand (a±b)² algebraic expressions into standard polynomials. Ideal for math learning and verification.

Speed of Sound Calculator

Quickly calculate the speed of sound propagation in air based on temperature, humidity, and air pressure; supports real-time conversion.

Poisson Distribution Calculator

Enter the average rate (λ) and number of events (k) to quickly calculate the exact Poisson probability P(X=k) and cumulative probabilities.