Math

Fraction Simplifier

Free online fraction simplifier. Enter the numerator and denominator to instantly reduce fractions to their simplest form and see the step-by-step GCD calculation process.

Curtain Fabric Calculator

Input window width, pleat multiplier, and fabric width to quickly calculate how many meters of fabric a single curtain needs—avoid buying excess or falling short.

Perfect Cube Expansion Calculator

Calculate the algebraic expansion of (a+b)³ and (a-b)³. Supports numbers and expressions, and automatically simplifies the result.

Sliding Friction Calculator

Quickly calculate sliding friction by entering the coefficient of friction and normal force. A free online kinetic friction calculator for physics and engineering.

Mass Flow Rate Calculator

Free online mass flow rate calculator. Enter density and volumetric flow rate to quickly calculate mass flow rate with automatic unit conversions.

Simple Pendulum Calculator

Free online simple pendulum calculator. Calculate pendulum period and frequency based on length and gravity, or reverse-calculate length and acceleration of gravity.

Snake Case & Camel Case Converter

Quickly convert between snake_case and camelCase naming, supports batch processing and common edge cases.

Periodic Table Lookup

Quickly search the periodic table to get detailed element properties and chemical formulas.

Sum of Cubes Calculator

Quickly calculate the sum of cubes for integer sequences. Supports custom number lists or continuous ranges for math and engineering.

Escape Velocity Calculator

Calculate the minimum escape velocity from any celestial body's surface, with support for custom celestial parameters.

Difference of Cubes Calculator

Calculate the difference of cubes (a³-b³) instantly. Supports integers and decimals, ideal for math learning and algebra.

Geometric Mean Calculator

Input a set of positive numbers, one-click calculation of geometric mean, commonly used for average growth rate, investment return and other scenarios.

Quadratic Equation Calculator

Enter coefficients a, b, and c to instantly calculate the real or complex roots of a quadratic equation.

Line Slope Calculator

Quickly calculate the slope of a line by entering the coordinates of two points. Free online slope calculator for math and geometry.

Torque Unit Converter

Quickly and accurately convert between different torque units, including common units like Newton-meters and foot-pounds.

Illuminance Unit Converter

Quickly convert illuminance units including lux (lx), foot-candles (fc), and phots (ph).

Voltage Unit Converter

Quickly convert voltage units like volts, millivolts, and kilovolts online with support for batch calculations.

Scientific Calculator

Advanced scientific calculator supporting complex math operations and function calculations.

Average Acceleration Calculator

Free online average acceleration calculator. Quickly find acceleration using initial velocity, final velocity, and time with multiple unit support for fast, accurate results.

Correlation Coefficient Calculator

Input two sets of continuous data, quickly calculate Pearson correlation coefficient R, and determine the strength of linear correlation.