Physics Calculators
Forces, energy, motion, electricity, waves, and gases · 18 calculators
Mechanics10
Force Calculator (F = ma)
Solve Newton's second law, F = ma, for force, mass, or acceleration. Enter any two values to find the third, in SI units (newtons, kg, m/s²).
Acceleration Calculator
Calculate acceleration from change in velocity over time, a = (v − u) / t, or from force and mass, a = F / m. Get results in m/s².
Velocity Calculator
Calculate final velocity with v = u + at, or average velocity from displacement and time. Enter your values to solve for speed in m/s.
Momentum Calculator
Calculate linear momentum with p = m·v and impulse as the change in momentum (J = Δp). Solve for momentum, mass, or velocity in SI units.
Density Calculator
Calculate density with ρ = m / V. Solve for density, mass, or volume by entering the other two values, with results in kg/m³ and g/cm³.
Free Fall Calculator
Calculate free-fall distance, velocity, and time under gravity with h = ½gt² and v = gt, using g = 9.80665 m/s². Enter any one value to find the rest.
Projectile Motion Calculator
Calculate the range, maximum height, and time of flight of a projectile from its launch speed and angle, using g = 9.80665 m/s². SI units throughout.
Pressure Calculator
Calculate pressure with P = F / A. Solve for pressure, force, or area, with pressure shown in pascals, psi, and bar.
Gravitational Force Calculator
Calculate the gravitational attraction between two masses with Newton's law of universal gravitation, F = G·m₁·m₂ / r², using G = 6.674 × 10⁻¹¹ N·m²/kg².
Torque Calculator
Calculate torque with τ = r·F·sin θ. Solve for torque, force, radius, or angle, with torque shown in newton-metres (N·m).
Energy & Work3
Kinetic Energy Calculator
Calculate kinetic energy with KE = ½mv². Solve for kinetic energy, mass, or velocity in SI units (joules, kg, m/s) by entering the other two.
Potential Energy Calculator
Calculate gravitational potential energy with PE = mgh. Solve for energy, mass, or height using g = 9.80665 m/s² and SI units.
Work and Power Calculator
Calculate work with W = F·d·cos θ and power with P = W / t. Find work done by a force at an angle and the power delivered over time, in SI units.
Electricity3
Ohm's Law Calculator
Solve Ohm's law (V = I × R) for voltage, current, or resistance, and get the power (P = V × I). Enter any two values to find the rest.
Electrical Power Calculator
Calculate electrical power using P = VI, P = I²R, or P = V²/R. Enter any two of voltage, current, and resistance to find power and the remaining values.
Resistor Color Code Calculator
Decode 4-band and 5-band resistor color codes into resistance and tolerance. Pick each band's color to read the resistor's value in ohms instantly.