Physics & Chemistry (58 tools)
Velocity, force, energy, Ohm law, gas laws, molarity and equation balancing
⟶Speed Distance Time CalculatorSpeed, time and distance.⇉Acceleration CalculatorAcceleration and uniform motion.⇰Force CalculatorForce, mass and acceleration.⚡Work & Energy CalculatorKinetic and potential energy.ΩOhm's Law CalculatorVoltage, current, resistance, power.P VIdeal Gas Law CalculatorThe ideal gas equation PV = nRT.⚗Molar Mass CalculatorMolar mass from a formula.🧪Molarity & Dilution CalculatorMolarity and dilution.ρDensity CalculatorDensity, mass and volume.⬇Pressure CalculatorPressure and unit conversion.∿Wavelength & Frequency CalculatorWavelength, frequency and photon energy.⚓Buoyancy CalculatorBuoyancy and floating.⏱Pendulum Period CalculatorPendulum period and length.pHpH CalculatorpH, pOH and H⁺ concentration.☢Half-Life CalculatorHalf-life, remaining amount and dating.⚛Average Velocity CalculatorAverage velocity from displacement and time, also in km/h and knots.⚛Acceleration CalculatorAcceleration from initial and final velocity plus time, with the distance covered.⚛Free Fall CalculatorFall time, impact velocity and mean velocity from height and gravity.⚛Projectile Range CalculatorRange, maximum height and flight time from launch speed and angle on flat ground without drag.⚛Momentum CalculatorMomentum and kinetic energy from mass and velocity, plus the impulse needed to stop.⚛Kinetic Energy CalculatorKinetic energy from mass and velocity, with the equivalent height and velocity-squared term.⚛Potential Energy CalculatorGravitational potential energy from mass, height and gravity, with the equivalent impact speed.⚛Work Done CalculatorWork from force, displacement and angle, plus the power and an efficiency reference.⚛Power CalculatorPower from work and time, converted to horsepower and hourly energy.⚛Centripetal Force CalculatorCentripetal force and acceleration from mass, speed and radius, with the period.⚛Torque CalculatorTorque from force and lever arm, with the effective component at any angle.⚛Pendulum Period CalculatorPendulum period and frequency from length and gravity, with the small-angle condition.⚛Speed of Sound CalculatorSpeed of sound in air from temperature, with Mach numbers and echo timing.⚛Doppler Effect CalculatorObserved frequency for a moving source, covering approaching and receding cases.⚛Refraction (Snell Law) CalculatorRefraction angle from incidence angle and refractive indices, with the critical angle.⚛Thin Lens CalculatorImage distance and magnification from object distance and focal length, identifying real or virtual images.⚛Heat Conduction CalculatorHeat flow and thermal resistance from conductivity, area, temperature difference and thickness.⚛Specific Heat CalculatorHeat needed from mass, specific heat and temperature change, with equivalent power and time.⚛Latent Heat CalculatorHeat needed for a phase change from mass and latent heat, with equivalent heating time.⚛Thermal Expansion Calculator elongation from length, expansion coefficient and temperature change, with a thermal-stress estimate.⚛Ohm Law CalculatorFill any two of voltage, current and resistance to get the third plus power.⚛Series Resistance CalculatorTotal resistance, voltage split and power share for two series resistors.⚛Parallel Resistance CalculatorTotal resistance, current split and branch power for two parallel resistors.⚛Capacitor Energy CalculatorStored energy and charge from capacitance and voltage, with the RC time constant.⚛RC Time Constant CalculatorTime constant, cutoff frequency and key charge times from R and C.⚛Wavelength and Frequency CalculatorWavelength from wave speed and frequency (or the reverse) for sound and electromagnetic waves.⚛Photon Energy CalculatorPhoton energy from wavelength or frequency, converted to electronvolts and molar energy.⚛Half-Life Decay CalculatorRemaining and decayed amounts from an initial quantity, half-life and time, with the decay constant.⚛Escape Velocity CalculatorSurface escape velocity and orbital velocity from body mass and radius.⚛Orbital Period CalculatorOrbital period, velocity and altitude from central mass and orbital radius.⚛Buoyancy CalculatorBuoyant force from displaced volume and fluid density, with the maximum floating mass.🌡️ideal gas CalculatorSolve the ideal gas law for the missing state variable.🧫pH value CalculatorConvert between pH, [H⁺], [OH⁻] and pOH.🔭refraction angle CalculatorRefraction angle, critical angle and Fresnel reflectance from two refractive indices.🔍thin lens CalculatorImage distance, magnification and image type from focal length and object distance.💡photon energy CalculatorPhoton energy in joules and electron-volts, frequency and wavenumber from wavelength.🌊seawater density CalculatorSeawater density and sigma-t from temperature and salinity using a simplified equation of state.🌊tide range CalculatorSpring and neap ranges plus height above mean sea level from tidal constituent amplitudes.🌊water pressure CalculatorHydrostatic and absolute pressure plus fresh-water equivalent from depth.🌍earthquake energy CalculatorEnergy release, TNT equivalent and magnitude ratios from the moment magnitude.🌬️wind chill CalculatorWind-chill equivalent temperature and exposure risk from air temperature and wind speed.💧dew point CalculatorDew point, absolute humidity and an approximate wet-bulb temperature from air temperature and RH.🌧️runoff CalculatorRunoff volume and peak flow from catchment area, rainfall depth and runoff coefficient.