⚡ Physics calculators

Mechanics, electricity, waves and thermodynamics. 20 calculators.

• Acceleration CalculatorCalculate acceleration from change in speed and time — or the final speed or time needed — in m/s², g and more.
• Centripetal Force CalculatorCalculate centripetal force and acceleration for an object moving in a circle from mass, speed and radius.
• Density Calculator (ρ = m/V)Calculate density from mass and volume — or mass or volume from density — in kg/m³, g/cm³ and lb/ft³.
• Force Calculator (F = ma)Calculate force, mass or acceleration using Newton's second law, F = m × a, in newtons, kN or lbf.
• Free Fall CalculatorCalculate fall time, impact speed and fall height for an object dropped from rest, ignoring air resistance.
• Ideal Gas Law Calculator (PV = nRT)Solve the ideal gas law for pressure, volume, amount of gas (moles) or temperature.
• Kinetic Energy CalculatorCalculate kinetic energy from mass and speed (KE = ½mv²) — or the speed or mass from a known energy.
• Momentum Calculator (p = mv)Calculate momentum from mass and velocity, or find velocity or mass from momentum.
• Ohm's Law CalculatorEnter any two of voltage, current, resistance or power and get the other two — with steps, unit conversion and a live graph.
• Pendulum Period CalculatorCalculate the period and frequency of a simple pendulum from its length — or the length for a given period.
• Potential Energy Calculator (PE = mgh)Calculate gravitational potential energy from mass and height — or the height for a given energy.
• Pressure Calculator (P = F/A)Calculate pressure from force and area — or the force or area — in Pa, kPa, bar or psi.
• Projectile Motion CalculatorCalculate range, maximum height and flight time of a projectile from launch speed and angle.
• RC Time Constant CalculatorCalculate the RC time constant, charging time and cut-off frequency of a resistor–capacitor circuit.
• Resistors in Series & Parallel CalculatorCalculate total resistance of up to three resistors connected in series or in parallel.
• Speed, Distance & Time CalculatorCalculate speed, distance or travel time — enter any two and get the third, in km/h, mph, m/s, km or miles.
• SUVAT Equations Calculator (Kinematics)Solve constant-acceleration motion problems — initial velocity, final velocity, acceleration, time and displacement.
• Wavelength & Frequency CalculatorConvert between wavelength, frequency and wave speed for light, radio and sound (v = fλ).
• Weight Calculator (Mass to Weight on Planets)Convert mass to weight (force) on Earth, the Moon, Mars and other planets using W = m × g.
• Work & Power CalculatorCalculate work done (W = F × d) and power (P = W ÷ t) from force, distance and time.