Physics Calculators
Professional tools for Physics Calculators
Our Physics Calculators collection covers mechanics, energy, electricity, waves, thermodynamics, and modern physics. Whether you need to calculate velocity, solve circuit problems, or understand projectile motion, our 110 free physics calculators give you instant answers with complete step-by-step solutions for every physics concept!
Ideal Gas Law Calculator — PV=nRT, Combined Gas Law
use the combined gas law (Boyle's, Charles's, Gay-Lussac's), find molar mass of unknown gases, and compare ideal vs real gas with Van der Waals equation.
Use Calculator →Pressure Calculator — P=F/A, Hydrostatic, Absolute vs Gauge
compute P=F/A (force per area), hydrostatic pressure P=ρgh at any fluid depth, convert between absolute and gauge pressure, find pressure altitude with ISA formula, and convert all pressure units (Pa, psi, bar, atm, mmHg)
Use Calculator →Free Fall Calculator — Distance, Time, Velocity & Terminal Velocity
compute fall time, distance, and velocity using v=gt, d=½gt², and v²=2gd. Includes terminal velocity calculator, reference table for falls from 10ft to 30,000ft, and comparison with/without air resistance
Use Calculator →Gravitational Force Calculator — Newton’s Law, Planet Weight & G-Force
compute F=Gm₁m₂/r² between any two masses, find your weight on all planets (Mars, Moon, Jupiter), calculate surface gravity, g-force, and impact force.
Use Calculator →Electric Field Calculator — Coulomb’s Law, E Field & Point Charge
compute electric force (Coulomb's law F=kq₁q₂/r²), electric field from point charge (E=kq/r²), field from voltage (E=V/d), and fields from wire, ring, and disk charge distributions.
Use Calculator →Work Calculus Calculator — Work as an Integral W=∫F(x)dx with Steps
Free work calculus calculator — compute work done by variable forces using W=∫F(x)dx. Covers spring work (Hooke's law), chain lifting, liquid pumping, and general variable force problems with full symbolic integration steps. Calculus 2 work problems solved
Use Calculator →Work Done Calculator — W=Fd·cosθ Physics Formula with Steps
compute work using W=F×d×cosθ, solve for force, distance, or angle, apply the Work-Energy Theorem, and calculate power with force-displacement diagram.
Use Calculator →Capacitor Charge Calculator — Energy, Charge, Voltage & RC Circuit
find energy stored (E=½CV²), charge (Q=CV), and voltage from any two known values. Includes RC circuit discharge calculator, series/parallel capacitance, and plate capacitor geometry.
Use Calculator →Doppler Effect Calculator — Frequency, Shift & Doppler Equation
compute observed frequency using f'=f(v+v_o)/(v+v_s) for sound or the relativistic formula for light. Includes sign convention guide, ambulance example, redshift calculator, and animated wavefront simulation
Use Calculator →Refractive Index Calculator — Snell’s Law, Angle of Refraction
solve Snell's law (n₁sinθ₁=n₂sinθ₂) for any variable, find the critical angle for total internal reflection, and calculate refractive index from speed or wavelength with ray diagram.
Use Calculator →Buoyancy Calculator — Buoyant Force, Float or Sink & Water Displacement
Calculate buoyant force using Archimedes' principle (F=ρVg). Find whether an object floats or sinks, apparent weight in fluid, and fluid density from measurements.
Use Calculator →Photon Energy Calculator — E=hf, Wavelength to Energy
convert between photon energy (Joules, eV), frequency (Hz to THz), wavelength (nm, μm, Å), and wavenumber (cm⁻¹). Uses E=hf and E=hc/λ with full step-by-step working and EM spectrum classification.
Use Calculator →Arc Length Calculator — Geometry, Calculus & Parametric Curves
find arc length of circle arcs (s=rθ), functions (∫√(1+f'²)dx), parametric and polar curves. Also finds radius from arc length using the sagitta-chord formula.
Use Calculator →Standard Atmosphere Calculator — Density Altitude, Pressure & Temperature
Standard atmosphere calculator — find temperature, pressure, density, and speed of sound at any altitude using the ISA model. Includes density altitude calculator, pressure altitude converter, and full ISA reference table from sea level to 80km
Use Calculator →Air Properties Calculator — Density, Viscosity & Thermal Conductivity vs Temp
Calculate thermophysical properties of dry air at any temperature and pressure: density, dynamic viscosity, kinematic viscosity, thermal conductivity, and Prandtl number.
Use Calculator →Density Calculator — Cylinder, Water Displacement & Reference Table
solve ρ=m/V for density, mass, or volume, find density of cylinders and spheres, use water displacement, and look up water density in kg/m³, lb/ft³, g/cm³, and lb/gal at any temperature
Use Calculator →Uniform Circular Motion Calculator — Period, Frequency & Centripetal Force
Calculate centripetal acceleration (a=v²/r), centripetal force (F=mv²/r), period, frequency, and angular velocity for uniform circular motion.
Use Calculator →Force Calculator – F = ma, Net Force, Applied Force & Newton’s Laws
solve F = ma for force, mass or acceleration, calculate net force from multiple forces, find applied force with friction, and compute average force using impulse-momentum theorem.
Use Calculator →Gravitational Potential Energy Calculator – GPE = mgh Formula & Examples
solve GPE = mgh for any variable, calculate ΔGPE between two heights, compute gravitational force with Newton's law. All planets included.
Use Calculator →Acceleration Calculator – Average Acceleration Formula & Equations
solve a = (vf−vi)/t, find acceleration from distance and time, acceleration without time using vf²=vi²+2ad, and centripetal acceleration.
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