Free Online Calculators

Equivalent capacitance for capacitors in series and parallel; energy stored in a capacitor U = ½CV²

Ideal heat-engine efficiency η = 1 − Tc/Th and related thermodynamics estimates for Carnot cycles

Centripetal acceleration, force, angular speed, period, and radius for uniform circular motion

Perform arithmetic operations on complex numbers including addition, subtraction, multiplication, and division

Calculate convolution of two functions or sequences with step-by-step solutions

Density from mass and volume, buoyant force and apparent weight using Archimedes' principle for fluids

Observed frequency for moving source or observer (sound); optional EM-style recession formulas where applicable

Calculate exponential growth and decay with initial value, growth rate, and time period

Calculate powers with negative and fractional exponents plus expanded form guidance

Calculate factorial values (n!) with exact results, digit counts, and reusable history

Calculate net force, mass, or acceleration using Newton's second law and related linear dynamics relations

Find the greatest common factor (GCF) or greatest common divisor (GCD) of two or more numbers

Solve constant-acceleration motion: displacement, velocity, acceleration, and time (SUVAT-style equations) for straight-line kinematics

Resonant frequency, angular frequency, and period for an ideal LC tank circuit from inductance and capacitance

Find the least common multiple (LCM) of two or more numbers

Calculate log, ln, custom base logarithm, and antilog in one free calculator

Torque from force and lever arm τ = rF sin θ; moment balance hints for simple rigid-body problems

Linear momentum, impulse, and one-dimensional elastic or inelastic collision estimates for introductory physics

Gravitational force between two masses and related scalars using Newton's law of universal gravitation

Add, subtract, multiply, and divide in binary, octal, decimal, or hexadecimal

Solve V = IR, electric power P = IV, and equivalent resistance for resistors in series and parallel

Compute range, time of flight, max height, and impact velocity for projectile motion with configurable launch angle and gravity

Calculate the length of sides in right triangles using the Pythagorean theorem

Solve quadratic equations using factoring, completing the square, and quadratic formula

Calculate ratios, simplify ratios, and find equivalent ratios

Calculate the remainder when dividing two numbers (modulo operation)

Calculate sides, angles, area, and perimeter of right triangles

Calculate nth roots including square root, cube root, and higher order roots

Angular momentum L = Iω, torque and angular acceleration for rigid bodies, rolling without slipping helpers

Advanced scientific calculator with trigonometric and inverse trigonometric functions, logarithms, exponentials, and complex mathematical operations

Convert numbers to and from scientific notation with arithmetic operations

Period and frequency for a mass–spring system and simple pendulum; angular frequency ω from k, m, or length g

Basic calculator for addition, subtraction, multiplication, and division operations

Calculate SIP returns, plan investments, and achieve financial goals. Calculate step-up SIP, inflation-adjusted returns, and get detailed projections.

Refraction angles from indices of refraction; critical angle for total internal reflection at an interface

Lorentz factor γ, time dilation, length contraction, and relativistic momentum or energy at high speeds

Calculate standard deviation, variance, and other statistical measures from a dataset

Object and image distances, focal length, and linear magnification for thin lenses and mirrors (sign conventions)

Calculate variance, standard deviation, and other statistical measures from a dataset

Compute kinetic and gravitational potential energy, work done, and simple work–energy relationships

Calculate percent error between experimental and theoretical values

Calculate price per unit from total price and quantity. Compare two products to see which is cheaper per oz, kg, or any unit.

Calculate weighted averages where different values have different importance or weights