Science Calculators

Density Calculator

Calculate density from mass and volume.

Speed, Distance & Time Calculator

Calculate speed from distance and time traveled.

pH Calculator

Calculate pH from hydrogen ion concentration.

Half-Life Calculator

Calculate remaining quantity of a substance after radioactive or exponential decay.

Wavelength & Frequency Calculator

Calculate the frequency of a wave from its wavelength, or vice versa.

Specific Heat Calculator

Calculate the heat energy needed to change a substance's temperature.

Significant Figures Counter

Count the number of significant figures in a number.

Buoyancy Force Calculator

Calculate the buoyant force on an object submerged in a fluid.

Terminal Velocity Calculator

Estimate the terminal velocity of a falling object based on air resistance.

Escape Velocity Calculator

Calculate the escape velocity needed to leave a planet's gravitational field.

Refractive Index Calculator

Calculate a material's refractive index from the speed of light within it.

Doppler Effect Calculator

Calculate the observed frequency of a sound source moving toward you.

Reynolds Number Calculator

Calculate the Reynolds number to determine if fluid flow is laminar or turbulent.

Specific Gravity Calculator

Calculate the specific gravity of a substance relative to water.

Conduction Heat Transfer Calculator

Calculate the rate of heat conduction through a material.

Water Boiling Point at Altitude Calculator

Estimate water's boiling point at a given altitude above sea level.

Sound Travel Time Calculator

Calculate how long it takes sound to travel a given distance.

Stellar Parallax Distance Calculator

Calculate a star's distance from Earth using its parallax angle.

Redshift Calculator

Calculate the redshift (z) of light from its observed and rest wavelengths.

Albedo Calculator

Calculate a surface's albedo (reflectivity) from incoming and reflected light.

Centripetal Acceleration Calculator

Calculate the centripetal acceleration of an object moving in a circular path.

Atmospheric Pressure at Altitude Calculator

Estimate air pressure at a given altitude above sea level.

Free-Fall Time Calculator

Calculate how long it takes an object to fall a given height.