Physics
41 free physics tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads.
Concrete Pump Friction Loss Calculator
Estimate line pressure loss for concrete pump hose and pipe runs
Crossbow Kinetic Energy Calculator
Calculate crossbow bolt kinetic energy and momentum for ethical hunting.
HVAC Duct Friction Loss Calculator
Calculate friction loss in inches WC per 100 ft for round sheet-metal duct
One-Compartment PK Parameter Calculator
Estimate Cmax, Cmin, AUC, t½, and Vd from two drug levels
Newtonian Telescope Collimation Offset Calculator
Calculate secondary mirror offset for any Newtonian reflector
Pipe Thermal Expansion Calculator
Calculate thermal growth for copper, steel, PEX, and CPVC pipe over a temperature range
Momentum Calculator
Momentum p = m × v and impulse J = F × t, instantly.
Newtons to Pounds-force Converter
Convert newtons to pounds-force instantly — 1 lbf = 4.4482216 N. Free, browser-only.
Escape Velocity Calculator
Work out the speed needed to escape any body's gravity.
Orbital Period Calculator
Compute how long one orbit takes with Kepler's third law.
Celsius to Newton Scale Converter
Convert °C to the historic Newton temperature scale, both ways.
Kinetic Energy Calculator
Solve KE = ½ m v² for energy, mass, or velocity — with full working shown.
Projectile Motion Calculator
Launch speed and angle to range, max height, flight time — with trajectory chart.
Doppler Shift Calculator
Calculate observed frequency, redshift and wavelength change for sound or light.
Lens Equation Calculator
Solve the thin lens equation for f, do or di — plus magnification, optical power and a live ray diagram.
Pressure at Depth Calculator
Calculate hydrostatic pressure at any depth — gauge and absolute, any fluid.
Reynolds Number Calculator
Predict laminar, transitional or turbulent flow — solve for Re, velocity, length or viscosity.
Terminal Velocity Calculator
Calculate the terminal velocity of any falling object using real aerodynamics.
Buoyancy Calculator
Compute buoyant force, fluid density, or submerged volume using Archimedes' principle.
Gas Density Calculator
Calculate gas density from pressure, temperature and molar mass — or solve for P or T.
Pendulum Period Calculator
Calculate period, length or gravity for a simple pendulum using T = 2π√(L/g).
Specific Heat Calculator
Calculate heat energy, mass, specific heat capacity or temperature change using Q = m·c·ΔT.
Spring Constant Calculator
Hooke's Law — solve for k, force, or displacement with elastic PE and natural frequency.
Thermal Expansion Calculator
Calculate linear, area and volumetric expansion for 30 materials using ΔL = α · L₀ · ΔT
Angular Velocity Calculator
Calculate angular velocity, centripetal acceleration, tangential speed and more — with unit conversions.
Free Fall Calculator
Solve distance, time, velocity or g for any free-fall problem — Earth, Moon, Mars and beyond.
Friction Calculator
Compute friction forces, normal forces, slip angles and incline acceleration — with full working shown.
Power Physics Calculator
Solve P = W/t, P = Fv, P = τω, P = VI, P = I²R, hydraulic, rotational KE and more — with full working shown.
Banking Angle Calculator
Find the ideal banking angle, speed, or curve radius for any banked turn.
de Broglie Wavelength Calculator
Calculate the quantum wavelength of any moving particle — electrons, protons, neutrons, or custom masses.
Frequency and Period Calculator
Instantly convert between frequency f, period T, and angular frequency omega — with unit-aware results across Hz to THz.
Impulse Calculator
Solve J = F·Δt or J = m·v_f − m·v_i with step-by-step working.
Kinetic Friction Calculator
Calculate friction force, stopping distance, incline dynamics and work done by friction.
Moment of Inertia Calculator
Compute I for 11 shapes, solve rotational KE and angular momentum — with the parallel axis theorem built in.
Orbital Velocity Calculator
Find the speed needed for a circular orbit around any body — with escape velocity, period and geostationary orbit.
Torque Physics Calculator
Solve torque, angular acceleration, rotational power, work, and lever balance — with full working shown.
Work & Energy Calculator
Solve work, KE, PE, power, momentum, impulse, collisions and centripetal force — with full working shown.
Centripetal Force Calculator
Solve F = m·v²/r instantly — force, mass, velocity, or radius.
Gravitational Potential Energy Calculator
Calculate PE = mgh instantly — solve for energy, mass, height, or g.
Projectile Range Calculator
R = v₀²·sin(2θ)/g — range, height, flight time, impact speed.
Wave Speed Calculator
v = f × λ — solve for wave speed, frequency, wavelength, or period.