Physics

Acceleration Calculator

Calculate acceleration, initial velocity, final velocity, or time from constant-acceleration equations, with average velocity, distance, g-force, checkpoints.

Angular Velocity Calculator

Calculate angular velocity from angle over time, rotational frequency, period, linear speed.

Buoyancy Calculator

Calculate buoyant force, displaced volume, or fluid density using Archimedes' principle, then compare object mass, submerged fraction.

Centripetal Force Calculator

Solve centripetal force, mass, velocity, or radius for circular motion from linear speed, angular speed, RPM, or period, with acceleration, g-force.

Decibel Calculator

Convert dB SPL to pressure and intensity, add multiple decibel sources.

Density Calculator

Calculate density, mass, or volume from the other two known values using density = mass ÷ volume, then review editable material examples.

Dew Point Calculator

Calculate dew point from temperature and humidity, reverse-solve RH, then check comfort bands, condensation risk, cold-surface margin, and safe RH ceiling.

Doppler Effect Calculator

Use this Doppler effect calculator to estimate observed sound frequency, hertz shift, pitch-change percentage, source and observer speed effects.

Escape Velocity Calculator

Estimate escape velocity for Earth, Moon, Mars, Jupiter, or a custom body from mass, radius, and launch altitude, then compare it with local orbital speed.

Force Calculator

Calculate force, mass, or acceleration with Newton's second law F = ma, combine signed net forces, convert newtons, kilonewtons, pound-force, kilogram-force.

Free Fall Calculator

Calculate free-fall distance, time, velocity, and impact energy from rest using standard kinematics, then compare the same known input across Earth, Moon, Mars.

Friction Calculator

Calculate friction force, normal force, or coefficient of friction using F = μN, with static and kinetic modes, material pair presets.

Half-Life Calculator

Use this half life calculator to solve remaining quantity, elapsed time, half-life, initial quantity, decay constant.

Heat Index Calculator

Estimate apparent temperature from air temperature and relative humidity using the NWS Rothfusz heat index formula.

Hooke's Law Calculator

Calculate spring force, displacement, or spring constant from Hooke's law, then check restoring direction, elastic potential energy.

Ideal Gas Law Calculator

Solve PV = nRT for pressure, volume, moles, or temperature with STP and SATP presets, unit conversions, molar-volume checks.

Impact Force Calculator

Calculate average impact force for crashes, dropped objects, or falls from mass, speed, or drop height using stopping distance or stopping time, with g-force.

Kinetic Energy Calculator

Calculate kinetic energy, mass, or velocity from the other two, then review energy conversions, equivalent drop height, and same-mass speed comparisons.

Mass Calculator

Calculate mass, density, or volume from the other two known values using the mass = density × volume relationship, with SI unit conversions.

Momentum Calculator

Calculate linear momentum, mass, or velocity using p = mv, with support for kg·m/s, g·cm/s, lb·ft/s, and slug·ft/s.

Potential Energy Calculator

Calculate gravitational potential energy, mass, height, or gravity using PE = mgh, with presets for Earth, Moon, Mars, Jupiter, Venus, and the Sun.

Projectile Motion Calculator

Calculate range, maximum height, time of flight, and impact velocity for projectile motion from initial velocity, launch angle, and optional initial height.

Snell's Law Calculator

Calculate the angle of refraction from refractive indices and incidence angle using Snell's law, with total-internal-reflection detection.

Terminal Velocity Calculator

Estimate terminal velocity from mass, drag coefficient, cross-sectional area, and fluid density, then solve backwards for the drag area, area, C_d.

Thermal Expansion Calculator

Estimate linear, area, or volume thermal expansion from material coefficient, original size, and temperature change, compare materials.

Torque Calculator

Torque calculator for force, lever arm, and angle using τ = rF sin(θ), with signed torque and moment-of-force context.

Velocity Calculator

Use this velocity calculator to solve average velocity, signed displacement, elapsed time, or final velocity under constant acceleration.

Wavelength Calculator

Solve wavelength, frequency, or wave speed from the wave equation v = fλ, with step-by-step interpretation for common wave problems.

Weight Force Calculator

Calculate gravitational weight force from mass and local gravitational acceleration (W = mg), with planet presets for Earth, Moon, Mars, and more.

Wind Chill Calculator

Estimate wind chill, winter feels-like temperature, and frostbite timing from air temperature and wind speed using the NOAA and Environment Canada formula.

Work and Power Calculator

Calculate mechanical power from work and time or force and velocity with a work and power calculator using P = W / t and P = F × v.

Work Calculator

Calculate mechanical work, force, distance, or angle using W = Fd·cos(θ), with energy unit conversion and support for any angle between 0° and 180°.