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Physics
Calculate motion, force, energy, waves, optics, thermodynamics, and other core physics quantities.
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Boltzmann Distribution Calculator
Calculate the Boltzmann factor, two-level state populations, partition function, entropy, heat capacity, and target temperature.
Friction Trajectory Calculator
Model a one-dimensional friction trajectory with a static-friction start gate, kinetic-friction motion, exact zero-speed events, and live position and velocity history.
Friction Equilibrium Calculator
Resolve an angled applied force on an incline, calculate normal load and required static friction, and identify equilibrium, critical slip, contact loss, or kinetic motion.
Momentum Solver Calculator
Solve linear momentum, mass, or signed velocity with explicit SI conversion, one-dimensional direction conventions, validation, substitution, and reverse checking.
Momentum Energy Calculator
Solve classical kinetic energy, momentum magnitude, or mass from K = p^2/(2m), with unit conversion, speed reconstruction, and an explicit nonrelativistic applicability check.
Momentum Rate Calculator
Calculate initial and final momentum, signed momentum change, impulse, and average force over a defined time interval from constant mass and measured velocities.
Momentum Graph Calculator
Build a live force-time and momentum-time record from three force intervals, then reconcile graph area, slope, impulse, and momentum change.
Momentum Scenario Calculator
Compare two two-body momentum scenarios using initial and final totals, external impulse residuals, relative residuals, and an explicit conservation tolerance.
Momentum Conversion Calculator
Convert signed momentum or impulse among dimensionally compatible SI, CGS, and US customary units through one kilogram-metre-per-second bridge.
Momentum Trajectory Calculator
Trace px and py through two constant-force phases, report vector impulse and final momentum, and plot the path in momentum space rather than physical position.
Momentum Equilibrium Calculator
Sum three objects’ two-dimensional momentum vectors, compare the resultant with an explicit tolerance, and calculate the exact closing momentum vector.
Heat Transfer Solver Calculator
Solve a one-layer steady-state heat-transfer network for heat rate, required conductivity, or required thickness with convection films and an auditable resistance ledger.
Heat Transfer Energy Calculator
Calculate signed sensible and latent heat for a defined material path using Q = m c delta T and Q = m f L, without confusing total energy with heat-transfer rate.
Heat Transfer Rate Calculator
Calculate signed steady heat-transfer rate, heat flux, and overall conductance from U-value, area, and boundary temperatures, with power kept distinct from energy.
Heat Transfer Graph Calculator
Plot temperature difference, instantaneous heat-transfer rate, and cumulative energy versus time from a real lumped-capacitance model and current inputs.
Heat Transfer Scenario Calculator
Compare two complete steady plane-wall scenarios and isolate the effects of conductivity, thickness, area, film coefficients, and boundary temperatures.
Heat Transfer Conversion Calculator
Convert a heat-transfer coefficient through an explicit W/(m2 K) bridge, then test the converted value in hA and hA deltaT without mixing coefficients, conductance, and heat rate.
Heat Transfer Trajectory Calculator
Calculate a lumped-capacitance heating or cooling trajectory, enforce the Biot-number validity gate, and reconcile temperature, heat rate, and stored-energy change at the...
Heat Transfer Equilibrium Calculator
Solve the steady temperature of one heat-generating node between hot and cold reservoirs, preserve signed branch flows, and prove the node energy balance closes.
Ideal Gas Solver Calculator
Solve one unknown in PV = nRT with absolute pressure and temperature, explicit unit conversion, a canonical SI state ledger, and a numerical closure check.
Ideal Gas Energy Calculator
Calculate ideal-gas internal-energy and enthalpy change, then distinguish rigid-volume heat from constant-pressure heat and boundary work with one signed first-law ledger.
Ideal Gas Rate Calculator
Calculate the average net molar and mass transfer rate needed to move a rigid isothermal vessel between two absolute pressures.
Ideal Gas Graph Calculator
Plot three ideal-gas pressure-volume isotherms and calculate reference pressure, local slope, endpoint ratio, and reversible isothermal work.
Ideal Gas Scenario Calculator
Compare volume, density, and compression for the same ideal-gas charge at two absolute pressure and temperature scenarios.
Ideal Gas Conversion Calculator
Convert compatible absolute pressure, volume, and temperature units to SI and calculate ideal-gas amount in mol, kmol, or lbmol.
Ideal Gas Trajectory Calculator
Project ideal-gas temperature and pressure through time in a closed rigid vessel under constant net heat rate and constant molar heat capacity.
Ideal Gas Equilibrium Calculator
Find the final pressure, temperature, gas amount, and internal-energy redistribution after two ideal-gas chambers reach equilibrium inside one isolated rigid vessel.
Sound Wave Solver Calculator
Solve frequency, wavelength, or sound speed from c = f lambda, then reconcile period, angular frequency, and wavenumber for one uniform medium.
Sound Wave Energy Calculator
Convert RMS acoustic pressure into intensity, transmitted power, and total sound energy across a stated area and exposure time.
Sound Wave Rate Calculator
Infer acoustic power from a free-field RMS pressure measurement, distance, medium impedance, and declared source directivity.
Sound Wave Graph Calculator
Plot a real input-driven sound-pressure snapshot along distance, including wavelength, propagation delay, phase, and exponential level attenuation.
Sound Wave Scenario Calculator
Compare two free-field sound paths from one measured reference level, including distance spreading, path attenuation, insertion loss, duration, receiver pressure, and sound...
Sound Wave Conversion Calculator
Convert among RMS sound pressure, sound pressure level, and plane-progressive-wave intensity while preserving the pressure reference and medium impedance.
Sound Wave Trajectory Calculator
Track the leading and trailing edges of a finite-duration sound burst across distance, including propagation delay, pulse length, carrier cycles, and envelope attenuation.
Sound Wave Equilibrium Calculator
Solve a steady diffuse-room acoustic energy balance from source power, equivalent absorption area, room volume, air properties, and the Sabine decay time.
Electromagnetic Wave Solver Calculator
Solve frequency, wavelength, or relative permittivity for a lossless electromagnetic plane wave and report phase speed, intrinsic impedance, period, and phase constant.
Electromagnetic Wave Energy Calculator
Calculate incident and absorbed electromagnetic energy on a tilted planar target over a finite exposure, with equivalent photon count at a selected wavelength.
Electromagnetic Wave Rate Calculator
Convert monochromatic optical power and wavelength into photon arrival rate, ideal detected-event rate, and expected events within a measurement gate.
Electromagnetic Wave Graph Calculator
Graph the electric and magnetic components of an ideal monochromatic plane wave in vacuum across position at a chosen instant and phase.
Electromagnetic Wave Scenario Calculator
Compare received power for two far-field line-of-sight free-space radio scenarios using frequency, distance, antenna gains, and explicit additional losses.
Electromagnetic Wave Conversion Calculator
Convert one positive vacuum electromagnetic-wave coordinate among frequency, wavelength, or single-photon energy into equivalent SI frequency, wavelength, energy, and period.
Electromagnetic Wave Trajectory Calculator
Trace a geometric-optics ray through a plane-parallel dielectric slab, including Snell refraction, exit position, lateral displacement, optical path length, and total internal...
Electromagnetic Wave Equilibrium Calculator
Solve the normal-incidence optical intensity that balances a declared opposing force using reflected, transmitted, and absorbed momentum transfer.
Lens Solver Calculator
Solve focal length, object distance, or image distance with the thin-lens equation, then determine magnification, image height, orientation, and real or virtual image status.
Lens Energy Calculator
Track optical pulse energy through a lens, convert transmitted energy to photon count, and estimate diffraction-limited Airy radius, disk-average fluence, and pulse-average...
Lens Rate Calculator
Convert pulse energy and repetition rate into lens input, transmitted, absorbed, and residual-loss power plus transmitted photon throughput.
Lens Graph Calculator
Graph signed image distance and magnification across a real-object distance scan for one ideal thin lens, preserving the focal-plane discontinuity and current operating point.
Lens Scenario Calculator
Compare two signed focal lengths for one object and sensor, including focus position, magnification, image height, sensor utilization, clipping, and target framing error.
Lens Conversion Calculator
Convert signed effective focal length among mm, cm, m, and inches and bridge it to optical power in diopters without losing converging, diverging, or afocal meaning.
Lens Trajectory Calculator
Trace one signed paraxial ray through free space, an ideal thin lens, and an observation plane using ABCD matrices, including aperture clearance and axis crossing.
Lens Equilibrium Calculator
Solve the uniform steady lens temperature where absorbed optical power is balanced by convection and net grey-body radiation to ambient surroundings.
Mirror Solver Calculator
Solve the signed spherical-mirror equation for image distance, magnification, image height, and real or virtual image classification.
Mirror Energy Calculator
Calculate incident, reflected, absorbed, and remaining optical energy for a tilted mirror during a finite exposure.
Mirror Rate Calculator
Convert monochromatic optical power into reflected and delivered photon rates plus the expected photons in one measurement gate.
Mirror Graph Calculator
Graph signed image distance and magnification against real-object distance for a concave or convex spherical mirror.
Mirror Scenario Calculator
Compare two spherical-mirror choices for the same object, including signed image location, magnification, orientation, and screen feasibility.
Mirror Conversion Calculator
Convert a spherical mirror specification among signed radius, focal length, optical power, curvature, f-number, and exact edge sag under one declared sign convention.
Mirror Trajectory Calculator
Trace an off-axis ray to an exact spherical mirror hit, reflect it with vector geometry, and compare its axis intercept with the paraxial image prediction.
Mirror Equilibrium Calculator
Balance radiation-pressure torque on an opaque reflective mirror against a linear torsional spring and report the static angular deflection.
Electric Field Solver Calculator
Superpose two signed point-charge field vectors at a 2D probe, then compute scalar potential, test-charge force, and test potential energy.
Electric Field Energy Calculator
Calculate electrostatic energy density and total stored energy in a uniform linear dielectric field, then compare the result with an engineering energy budget.
Electric Field Rate Calculator
Calculate the component and magnitude of the average change in a measured two-dimensional electric-field vector between two timestamps, while keeping vector rate distinct from...
Electric Field Graph Calculator
Generate an exact plot-ready table of signed radial electric field and potential versus distance for one isolated point charge in a uniform dielectric, with a highlighted...
Electric Field Scenario Calculator
Compare two isolated point-charge field cases with different signed charges, radii, and dielectric assumptions, then calculate the signed force on one shared test charge.
Electric Field Conversion Calculator
Convert signed electric-field strength among V/m, N/C, kV/m, V/cm, kV/cm, MV/m, and mV/mm through one canonical SI bridge without changing field direction.
Electric Field Trajectory Calculator
Calculate the two-dimensional nonrelativistic trajectory of a charged particle in a uniform static electric field, including acceleration, final velocity, electric work, and...
Electric Field Equilibrium Calculator
Find the finite point where two collinear point-charge electric fields cancel, identify its region, and audit the residual field and electric potential.
Magnetic Force Solver Calculator
Solve all three components of the magnetic Lorentz force from signed charge, velocity, and magnetic-field vectors with SI conversions and orthogonality checks.
Magnetic Force Energy Calculator
Partition a nonrelativistic charged particle’s kinetic energy into parallel and perpendicular components and calculate its Larmor radius in a uniform magnetic field.
Magnetic Force Rate Calculator
Calculate nonrelativistic cyclotron angular rate, frequency, period, and turns during an observation interval from particle mass, charge state, and magnetic field.
Magnetic Force Graph Calculator
Generate an exact graph-ready table of magnetic-force magnitude versus angle from 0 to 180 degrees, including a selected reference angle and normalized force.
Magnetic Force Scenario Calculator
Compare magnetic force and force per active length for two straight current-carrying conductor scenarios with independent field, current, length, and angle inputs.
Magnetic Force Conversion Calculator
Convert magnetic-force readings through newtons and determine the uniform field required to produce that force on a specified straight conductor.
Magnetic Force Trajectory Calculator
Solve a nonrelativistic charged particle's helical radius, period, phase, pitch, position, and velocity in a uniform magnetic field.
Magnetic Force Equilibrium Calculator
Compare upward magnetic force on a straight conductor with supported weight and downward preload, then solve the equilibrium current.
Photon Solver Calculator
Solve vacuum wavelength, frequency, photon energy, momentum, and spectroscopic wavenumber from one known single-photon quantity.
Photon Energy Calculator
Calculate single-photon energy, transmitted pulse energy, delivered photon count and pulse peak power from wavelength, pulse energy, transmission and duration.
Photon Rate Calculator
Convert wavelength and optical power into source photon rate, transmitted arrival rate, detected count rate, gate counts and ideal shot noise.
Photon Graph Calculator
Build a numerical wavelength sweep showing photon energy and photon rate at fixed power, with endpoint changes and reciprocal-law checks.
Photon Scenario Calculator
Compare two wavelength, power, transmission and detector-efficiency scenarios using detected rate, gate count, ratio and signed difference.
Photon Conversion Calculator
Convert one photon quantity into vacuum wavelength, frequency, spectroscopic wavenumber, joules, electronvolts and photon momentum with SI reconciliation.
Speed, Distance & Time Calculator
Use the selected solve mode and two known motion values to calculate speed, distance, or time, then report pace and metric speed.
Kinetic Energy Calculator
Calculate classical translational kinetic energy and momentum from mass and velocity and provide common engineering unit conversions.
Projectile Energy Calculator
Resolve the entered launch speed into horizontal and vertical components, calculate their kinetic-energy contributions, and add gravitational potential energy relative to the...
Projectile Velocity Calculator
Resolve the entered launch speed into horizontal and vertical components, then derive energy, momentum, time to apex, and maximum ideal height.
Projectile Trajectory Table Calculator
Resolve the entered projectile launch velocity, solve the ideal landing time from vertical motion, and sample the complete no-drag trajectory at equal time intervals.
Torque Calculator
Multiply force by the perpendicular lever arm to obtain torque and combine torque with rotational speed for mechanical power.
Projectile Motion Calculator
Estimate range, flight time, and maximum height for a projectile.
Pressure Calculator
Divide normal force by loaded area, convert pascals to kilopascals, and add entered external pressure for an absolute estimate.
Density Calculator
Divide mass by volume, apply the entered correction factor, and compare the result with a reference density.
Inclined Plane Friction Solver
Resolve weight into normal and downslope components, compare the unopposed force with maximum static friction, and separately calculate a kinetic-sliding reference.
Projectile Trajectory Solver Calculator
Resolve launch velocity into horizontal and vertical components, solve the positive ground-intersection time, and generate an exact time-position trajectory table.
Projectile Graph Calculator
Evaluate the ideal projectile equations at an exact sample time and expose component velocities, position, apex, and a level-ground range reference for graphing.
Projectile Scenario Comparison Calculator
Solve two independent ideal projectile scenarios under the same gravity and height before comparing range, time, apex, and target-distance margins.
Projectile Launch Speed Calculator
Solve the ideal no-drag projectile range equation for launch speed, then decompose the margin-adjusted speed into horizontal and vertical components.
Projectile Conversion Calculator
Calculate and review projectile conversion with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Projectile Equilibrium Calculator
Calculate and review projectile equilibrium with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Friction Energy Calculator
Calculate and review friction energy with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Friction Rate Calculator
Calculate and review friction rate with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Friction Graph Calculator
Calculate and review friction graph with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Friction Scenario Calculator
Calculate and review friction scenario with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Friction Conversion Calculator
Calculate and review friction conversion with the page's dedicated inputs, result breakdown, explanations, examples, and limitations.
Photon Trajectory Calculator
Estimate a straight optical ray endpoint, geometric path, optical path length, and medium delay from a declared start, direction, refractive index, and transit time.
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Describe the physical system before solving it
Physics calculators connect measurable quantities through models of motion, force, energy, momentum, waves, optics, and thermal behaviour. They make the equation and unit relationships visible so a result can be checked against the physical setup.
Define the system boundary, reference frame, direction convention, and relevant forces before solving. Idealised results may omit drag, friction, losses, nonuniform fields, relativistic effects, or quantum behaviour outside the stated approximation.
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How to choose a physics calculator
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Which physics calculator should I use?
| Calculator | Main inputs | Main outputs | Best for |
|---|---|---|---|
| Speed, Distance & Time Calculator | Any two of speed, distance, and time | The remaining motion quantity | Uniform scalar motion |
| Kinetic Energy Calculator | Mass and speed | Translational kinetic energy | Energy of a moving mass |
| Projectile Motion Calculator | Launch speed, angle, height, and gravity | Range, height, and flight time | Ideal ballistic trajectories |
| Boltzmann Distribution Calculator | Temperature, energy gap, and degeneracies | Population ratio and thermal properties | Two-level equilibrium populations |
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