Calculateus

Science & Engineering Calculators

Physics, chemistry, and engineering calculators covering the standard formulas used in coursework and applied problem-solving.

105 calculatorsPhysics, chemistry & engineering calculators

Most popular

Ohm's Law CalculatorCalculate voltage, current, resistance, or power using Ohm's Law - solve for whichever value is missing.Projectile Motion CalculatorCalculate the range, maximum height, and flight time of a projectile launched at an angle.Dilution CalculatorCalculate the volume needed to dilute a stock solution to a target concentration.Torque CalculatorCalculate torque from an applied force, lever arm distance, and angle.

All calculators

Free Fall & Kinematics CalculatorCalculate the distance fallen and final velocity of an object in free fall after a given time.
Force Calculator (Newton's Second Law)Calculate force, mass, or acceleration using Newton's second law of motion (F = ma).
Kinetic Energy CalculatorCalculate the kinetic energy of a moving object from its mass and velocity.
Ideal Gas Law CalculatorSolve for pressure, volume, moles, or temperature using the ideal gas law (PV = nRT).
pH CalculatorCalculate pH from hydrogen ion concentration, or hydrogen ion concentration from pH.
Resistor Combination CalculatorCalculate total resistance for resistors wired in series or parallel.
Molarity CalculatorCalculate the molarity of a solution from moles of solute and volume, or from mass and molar mass.
Voltage Divider CalculatorCalculate the output voltage of a two-resistor voltage divider circuit.
Capacitor Energy & Charge CalculatorCalculate the energy stored and charge held by a capacitor at a given voltage.
Momentum CalculatorCalculate the linear momentum of a moving object from its mass and velocity.
Work & Power CalculatorCalculate mechanical work done by a force and the power delivered over time.
Wavelength & Frequency CalculatorConvert between wavelength and frequency for electromagnetic waves using the wave equation.
Snell's Law Refraction CalculatorCalculate the angle of refraction as light passes between two materials, using Snell's Law.
Terminal Velocity CalculatorCalculate the terminal velocity of a falling object accounting for air resistance (drag).
Centripetal Force CalculatorCalculate the centripetal force and acceleration needed to keep an object moving in a circular path.
Capacitive & Inductive Reactance CalculatorCalculate the capacitive or inductive reactance of a component at a given AC frequency.
Escape Velocity CalculatorCalculate the escape velocity needed to break free of a planet or celestial body's gravity.
Buoyancy Force CalculatorCalculate the buoyant force on an object submerged in a fluid, using Archimedes' Principle.
Specific Heat / Heat Transfer CalculatorCalculate the heat energy required to change a substance's temperature, using its specific heat capacity.
Capacitor Series & Parallel CalculatorCalculate total capacitance for capacitors connected in series or parallel.
Newton's Law of Universal Gravitation CalculatorCalculate the gravitational force between two masses using Newton's Law of Universal Gravitation.
Horizontal Projectile Motion CalculatorCalculate the landing distance and time of flight for an object launched horizontally from a height.
pH to pOH CalculatorConvert between pH and pOH, and calculate hydroxide ion concentration.
Carbon-14 Dating CalculatorEstimate the age of an organic sample from its remaining percentage of Carbon-14.
Beer-Lambert Law (Absorbance) CalculatorCalculate light absorbance or concentration using the Beer-Lambert Law, used in spectrophotometry.
Wien's Displacement Law CalculatorCalculate the peak wavelength of light emitted by a blackbody at a given temperature.
Combined Gas Law CalculatorCalculate the pressure, volume, or temperature of a fixed amount of gas as conditions change.
RC Time Constant CalculatorCalculate the time constant of a resistor-capacitor circuit, and the charge time to reach common thresholds.
Refractive Index CalculatorCalculate a material's refractive index from the speed of light traveling through it.
Op-Amp Gain CalculatorCalculate the voltage gain of an inverting or non-inverting op-amp circuit from its resistor values.
Critical Angle CalculatorCalculate the critical angle for total internal reflection between two optical media.
Pendulum Period CalculatorCalculate the period of a simple pendulum from its length.
Coulomb's Law CalculatorCalculate the electrostatic force between two charged particles using Coulomb's Law.
Young's Modulus CalculatorCalculate a material's Young's Modulus (stiffness) from applied stress and resulting strain.
LED Series Resistor CalculatorCalculate the correct series resistor value to safely power an LED from a given supply voltage.
Speed of Sound in Air CalculatorCalculate the speed of sound in air at a given temperature.
AC Circuit Impedance CalculatorCalculate the total impedance of an AC circuit from its resistance and reactance.
Boyle's Law CalculatorCalculate the pressure or volume of a gas at constant temperature using Boyle's Law.
Charles's Law CalculatorCalculate the volume or temperature of a gas at constant pressure using Charles's Law.
Gay-Lussac's Law CalculatorCalculate the pressure or temperature of a gas at constant volume using Gay-Lussac's Law.
Ideal Gas Density CalculatorCalculate the density of an ideal gas from its pressure, molar mass, and temperature.
Beat Frequency CalculatorCalculate the beat frequency produced when two sound waves of slightly different frequencies interfere.
Doppler Effect CalculatorCalculate the observed frequency shift when a sound source moves toward a stationary observer.
Transformer Turns Ratio CalculatorCalculate the output voltage or turns ratio of an ideal transformer.
Wheatstone Bridge CalculatorCalculate the unknown resistance in a balanced Wheatstone bridge circuit.
Parallel Plate Capacitor CalculatorCalculate the capacitance of a parallel plate capacitor from its plate area, separation, and dielectric.
Kinematics Equations CalculatorSolve for final velocity and displacement of an object under constant acceleration using the SUVAT kinematics equations.
Impulse-Momentum CalculatorCalculate impulse, change in momentum, and average force from a change in an object's velocity over a contact time.
Elastic Collision Calculator (1D)Calculate the final velocities of two objects after a perfectly elastic, head-on collision.
Inclined Plane Force CalculatorCalculate the normal force, gravity component, and friction force acting on an object resting on an inclined plane.
Friction Force CalculatorCalculate the friction force between two surfaces from the normal force and coefficient of friction.
Mass-Spring Oscillator Period CalculatorCalculate the period, frequency, and angular frequency of a mass oscillating on a spring in simple harmonic motion.
Spring Force Calculator (Hooke's Law)Calculate the restoring force and elastic potential energy of a compressed or stretched spring using Hooke's Law.
Moment of Inertia CalculatorCalculate the moment of inertia for common rigid body shapes, such as a solid cylinder, sphere, rod, or hoop.
Rotational Kinetic Energy CalculatorCalculate the kinetic energy of a spinning object from its moment of inertia and angular velocity.
AC Power Factor CalculatorCalculate the power factor, phase angle, and reactive power of an AC circuit from real and apparent power.
Wire Resistance CalculatorCalculate the electrical resistance of a wire from its resistivity, length, and cross-sectional area.
Battery Life CalculatorEstimate how long a battery will last given its capacity, a device's current draw, and an efficiency factor.
Inductor Energy Storage CalculatorCalculate the energy stored in the magnetic field of an inductor carrying a given current.
LC Resonant Frequency CalculatorCalculate the resonant frequency of an inductor-capacitor (LC) circuit.
Decibel (dB) CalculatorConvert a power or voltage/amplitude ratio into decibels, the standard logarithmic unit for signal levels.
Thermal Expansion CalculatorCalculate how much a material's length changes when heated or cooled, using its linear thermal expansion coefficient.
Heat Conduction Rate CalculatorCalculate the rate of heat transfer through a material by conduction, using Fourier's Law.
Calorimetry Mixing Temperature CalculatorCalculate the final equilibrium temperature when two substances at different temperatures are mixed together.
Carnot Engine Efficiency CalculatorCalculate the maximum theoretical efficiency of a heat engine operating between a hot and cold reservoir.
Latent Heat (Phase Change) CalculatorCalculate the heat energy absorbed or released during a phase change, such as melting or boiling, at constant temperature.
Molality CalculatorCalculate the molality of a solution from moles of solute and the mass of solvent.
Limiting Reagent CalculatorDetermine which reactant limits a chemical reaction and how much of the excess reactant remains, from a balanced equation's mole ratios.
Parts Per Million (ppm) Concentration CalculatorCalculate a solution's concentration in parts per million from the mass of solute and the mass of the solution.
Henderson-Hasselbalch Equation CalculatorCalculate the pH of a buffer solution from its pKa and the ratio of conjugate base to weak acid concentration.
Osmotic Pressure CalculatorCalculate the osmotic pressure of a solution from its molar concentration and temperature.
Specific Gravity CalculatorCalculate the specific gravity of a substance by comparing its density to a reference fluid, usually water.
Moles to Particles (Avogadro's Number) CalculatorConvert between moles of a substance and the number of individual atoms, molecules, or particles it contains.
Thin Lens Equation CalculatorSolve for focal length, image distance, or object distance using the thin lens equation, and find the resulting magnification.
Diffraction Grating CalculatorCalculate the diffraction angle for a given order of light passing through a diffraction grating.
Vibrating String Harmonic Frequency CalculatorCalculate the frequency of a specific harmonic on a vibrating string, such as a guitar or violin string.
Kepler's Third Law (Orbital Period) CalculatorCalculate the orbital period of a body from its semi-major axis and the mass of the object it orbits.
Gravitational Potential Energy CalculatorCalculate the gravitational potential energy of an object based on its mass, height, and local gravity.
Angular Momentum CalculatorCalculate the angular momentum of a rotating object from its moment of inertia and angular velocity.
Electric Field of a Point Charge CalculatorCalculate the electric field strength at a distance from a point charge using Coulomb's constant.
Magnetic Force on a Current-Carrying Wire CalculatorCalculate the magnetic force on a current-carrying wire in a magnetic field.
Mirror Equation CalculatorCalculate image distance and magnification for a concave or convex mirror using the mirror equation.
Radioactive Half-Life Remaining Amount CalculatorCalculate how much of a radioactive sample remains after a given time, based on its half-life.
Mass-Energy Equivalence CalculatorCalculate the energy equivalent of a given mass using Einstein's mass-energy equivalence formula, E = mc².
Gravitational Field Strength CalculatorCalculate the gravitational field strength (surface gravity) at the surface of a planet or other body from its mass and radius.
Electric Potential Energy CalculatorCalculate the electric potential energy between two point charges separated by a given distance.
Bernoulli's Equation CalculatorCalculate the pressure at a second point in a flowing fluid system using Bernoulli's equation.
Reynolds Number CalculatorCalculate the Reynolds number for fluid flow to determine whether it's laminar or turbulent.
Pipe Flow Rate CalculatorCalculate the volumetric flow rate through a pipe from its cross-sectional area and fluid velocity.
Gear Ratio Torque & Speed CalculatorCalculate the output torque and rotational speed of a gear system from its gear ratio.
Beam Deflection CalculatorCalculate the maximum deflection of a simply supported beam under a center point load.
Stress-Strain CalculatorCalculate mechanical stress, strain, and elongation for a material under axial load.
Photon Energy CalculatorCalculate the energy of a photon from its frequency or wavelength using Planck's equation.
Special Relativity Time Dilation CalculatorCalculate how much time slows down for an object moving at a significant fraction of the speed of light.
Schwarzschild Radius CalculatorCalculate the Schwarzschild radius (event horizon size) of a black hole from its mass.
Hubble's Law Recession Velocity CalculatorCalculate a galaxy's recession velocity or distance using Hubble's Law.
Stellar Distance Modulus CalculatorCalculate the distance to a star from its apparent and absolute magnitude using the distance modulus formula.
Stefan-Boltzmann Law CalculatorCalculate the total power radiated by a blackbody based on its temperature and surface area.
Faraday's Law of Induction CalculatorCalculate the induced EMF from a changing magnetic flux through a coil using Faraday's Law.
RL Circuit Time Constant CalculatorCalculate the time constant and current charging curve for a resistor-inductor (RL) circuit.
Joule Heating Power CalculatorCalculate the heat dissipated in a resistor from current and resistance using Joule's first law.

About Science & Engineering Calculators

Force, velocity, molarity, Ohm's law - these calculators run the standard physics, chemistry, and engineering formulas exactly as published, so you get a precise answer instead of working through the algebra by hand.