Frictional Torque Calculator
The Frictional Torque Calculator computes torque due to friction from coefficient, normal force, and radius for mechanical systems.
Physics
Explore our physics calculators to simplify complex concepts and calculations. From motion and energy to forces and waves, these tools help students, researchers, and enthusiasts solve problems accurately and efficiently.
Browse our 111 calculators to solve common problems in Physics — from quick estimates to detailed results. This hub links to our most-used tools and guides so you can get answers fast.
Start with the popular picks below, or jump into the full list for more specific use cases.
Deceleration Calculator
The Deceleration Calculator calculates deceleration from initial speed, final speed, and stopping distance or time, with unit conversions.
Absorption to Energy Converter
The Absorption to Energy Converter converts Absorption to Energy using calibrated spectra, modelling efficiency losses and output power under laboratory conditions.
Focal Length vs Sensor Size Calculator
The Focal Length vs Sensor Size Calculator calculates angle of view and equivalent focal lengths for various sensor formats using crop factors.
Chamber-to-Barrel Ratio Calculator
The Chamber-to-Barrel Ratio Calculator models pressure evolution to select an efficient chamber-to-barrel volume ratio for safe, consistent ballistic performance.
Induction Motor Torque Calculator
The Induction Motor Torque Calculator computes the torque produced by an induction motor using input parameters such as power, speed, and efficiency.
Atmospheric Refraction Distance Calculator
The Atmospheric Refraction Distance Calculator estimates apparent line-of-sight distance over Earth’s curvature, accounting for refractive index gradients, temperature, and pressure.
Horsepower Loss over Time Calculator
The Horsepower Loss over Time Calculator estimates horsepower loss over time using initial power, decay constant, load cycles, temperature, and maintenance intervals.
Inductor Voltage Calculator
The Inductor Voltage Calculator calculates the induced voltage across an inductor using inductance and rate of current change in electrical circuits.
Fission Reaction Energy Release Calculator
The Fission Reaction Energy Release Calculator calculates Q-value and energy per fission from user-selected nuclides using mass differences.
Frequency Displacement Acceleration Calculator
The Frequency Displacement Acceleration Calculator estimates acceleration amplitude from frequency and displacement amplitude for simple harmonic oscillators, including unit conversions.
AD Density Calculator
The AD Density Calculator estimates air density from temperature, pressure, humidity, and altitude using standard atmospheric equations.
dB per Octave Calculator
The dB per Octave Calculator calculates the rate of change of gain with frequency in decibels per octave.
Aridity Index Calculator
The Aridity Index Calculator calculates an aridity index from precipitation and potential evapotranspiration to assess climatic water availability.
Capacitive Current Calculator
The Capacitive Current Calculator computes the RMS current through a capacitor from capacitance, frequency, and applied RMS voltage.
Hund’s Rule Calculator
The Hund’s Rule Calculator determines the ground-state term symbol of atoms by applying Hund’s rules to given electron configurations.
Bullet Momentum Calculator
The Bullet Momentum Calculator calculates linear momentum of a bullet from its mass and velocity, with SI and imperial unit conversions.
Cloud Height Calculator
The Cloud Height Calculator estimates cloud base height in metres from temperature and dew point using a standard psychrometric relationship.
Apparent Magnitude Ratio Calculator
The Apparent Magnitude Ratio Calculator computes brightness ratios between astronomical objects from their apparent magnitudes using Pogson’s law.
Kinematic Scattering Factor Calculator
The Kinematic Scattering Factor Calculator predicts electron or X-ray scattering amplitudes from atomic structures using standard kinematic diffraction theory and parameters.