Science Calculators

Density Calculator

Calculate density, mass, or volume using the density formula. Solve for any of the three variables — works for solids, liquids, and gases.

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Ohm's Law Calculator

Calculate voltage, current, or resistance using Ohm's Law. Also calculates power (watts) from any two known values.

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Speed Distance Time Calculator

Calculate speed, distance, or time using the SDT triangle. Solve for any of the three variables in any unit combination.

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Force Calculator (Newton's Second Law)

Calculate force, mass, or acceleration using Newton's Second Law (F = ma). Solve for any variable.

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Temperature Converter

Convert temperature between Celsius, Fahrenheit, and Kelvin instantly. Includes common reference temperatures for cooking, science, and everyday use.

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Pressure Calculator

Calculate pressure, force, or area using the pressure formula P = F/A. Also converts between pressure units — Pa, bar, PSI, atm, mmHg.

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Speed Calculator

Calculate speed, velocity, distance, or time. Covers linear, angular, and relative speed with unit conversions.

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Kinetic Energy Calculator

Calculate the kinetic energy of any moving object. Also calculates momentum, velocity from KE, or mass from KE.

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Wavelength & Frequency Calculator

Calculate the wavelength, frequency, or wave speed of any wave. Works for light, sound, radio, and other electromagnetic waves.

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Significant Figures Calculator

Round any number to any number of significant figures. Shows step-by-step working and scientific notation.

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Half-Life Calculator

Calculate radioactive decay, drug half-life, or any exponential decay. Find remaining quantity after any number of half-lives.

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Ideal Gas Law Calculator

Calculate pressure, volume, temperature, or moles of gas using the ideal gas law PV = nRT. Solve for any variable.

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Projectile Motion Calculator

Calculate the range, maximum height, time of flight, and velocity of any projectile. Enter launch speed and angle for full trajectory analysis.

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