Science Calculators
Physics runs on a handful of clean, timeless formulas. These science calculators handle the ones people look up most: the density of a material, the relationship between voltage, current, resistance and power, and the force behind Newton's second law. Enter what you know and each tool solves for the rest, with clear units and a worked example so you can follow the math yourself.
Density Calculator
Find density, mass, or volume with ρ = m/V — in g/cm³, kg/m³ and lb/ft³.
Ohm's Law Calculator
Enter any two of volts, amps, ohms, or watts to get the other two.
Force Calculator
Solve Newton's second law, F = m·a, for force, mass, or acceleration.
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