Science

Physics and chemistry calculators — force, energy, motion, gas laws, wavelength, and molecular weight, solved for any variable.

• Average Velocity Displacement Calculator (s = ½(u+v)t)

  Solve s = ½(u + v)t for displacement, initial velocity, final velocity, or time using the average of the two velocities.

• Density Calculator (ρ = m/V)

  Calculate density from mass and volume using ρ = m/V, or rearrange to solve for mass or volume instead — with step-by-step working shown.

• Displacement Calculator (s = ut + ½at²)

  Solve the SUVAT equation s = ut + ½at² for displacement, initial velocity, acceleration, or time — with worked steps shown.

• Elastic Potential Energy Calculator (U = ½kx²)

  Solve the elastic potential energy formula U = ½kx² for energy, spring constant, or displacement. Enter any two values and get the third with steps.

• Final Velocity Calculator (v = u + at)

  Solve the kinematics equation v = u + at for final velocity, initial velocity, acceleration, or time — with step-by-step working shown.

• Force Calculator (F = ma)

  Solve Newton's second law F = ma for force, mass, or acceleration. Enter any two of the three values and get the third with step-by-step working shown.

• Friction Force Calculator (f = μN)

  Calculate kinetic friction force from the coefficient of friction and normal force using f = μN, or solve for either value instead.

• Hooke's Law Calculator (F = kx)

  Solve Hooke's law F = kx for spring force, spring constant, or displacement. Enter any two values and get the third with step-by-step working shown.

• Ideal Gas Law Calculator (PV = nRT)

  Solve the ideal gas law PV = nRT for pressure, volume, moles, or temperature. Enter any three values and get the fourth with step-by-step working.

• Impulse Calculator (J = Ft)

  Solve J = Ft for impulse, force, or time. Enter any two values and get the third instantly, with unit-labeled step-by-step working shown below.

• Impulse-Momentum Theorem Calculator

  Solve FΔt = mΔv for force, time interval, mass, or velocity change. Enter any three values and get the fourth with step-by-step working shown.

• Kinetic Energy Calculator (KE = ½mv²)

  Solve the kinetic energy formula KE = ½mv² for energy, mass, or velocity. Enter any two values and get the third with step-by-step working shown.

• Mass–Energy Equivalence Calculator (E = mc²)

  Solve Einstein's mass-energy equivalence formula E = mc² for energy or mass. Enter one value and get the other instantly, with the substitution step shown.

• Molecular Weight Calculator (Molar Mass)

  Calculate the molecular weight (molar mass) of any chemical formula, like H2O or Ca(OH)2, with a per-element mass breakdown and step-by-step working.

• Momentum Calculator (p = mv)

  Solve p = mv for momentum, mass, or velocity. Enter any two values and get the third instantly with unit-labeled, step-by-step working shown.

• Potential Energy Calculator (PE = mgh)

  Solve the gravitational potential energy formula PE = mgh for energy, mass, or height. Enter any two values and get the third with steps shown.

• Pressure Calculator (P = F/A)

  Solve P = F/A for pressure, force, or area. Enter any two values and get the third instantly, in pascals, with step-by-step working shown below.

• Velocity-Squared Calculator (v² = u² + 2as)

  Solve the SUVAT equation v² = u² + 2as for final velocity, initial velocity, acceleration, or displacement — no time needed.

• Wavelength Calculator (λ = v/f)

  Calculate wavelength from wave speed and frequency using λ = v/f, or solve for speed or frequency instead — with step-by-step working shown.

• Weight Calculator (W = mg)

  Calculate weight from mass using W = mg, or find mass from a known weight. Uses Earth's standard gravity g = 9.8 m/s² with step-by-step working.

• Work Calculator (W = Fs)

  Solve the physics work formula W = Fs for work, force, or distance. Enter any two values and the calculator solves the third with step-by-step working.