Physics: Calculators and Tools
Motion and electricity with the basic formulas well explained.
High school physics is full of short formulas that hide big ideas. Speed, distance and time, or voltage, current and resistance, look like just letters in a triangle until you use them on a real case.
Here you will find tools that do the math and also take care of the units, which is where most mistakes happen. The supporting texts explain the reasoning behind the formulas and bring real-world examples, from car trips to workbench circuits.
Speed, Distance and Time Calculator
Find any one of the three quantities of uniform motion, in several units.
Open tool →Ohm’s Law Calculator
Voltage, current, resistance and power of simple circuits, with unit prefixes.
Open tool →Where to start. If you are going on a trip or training for a run, start with the speed, distance and time calculator. If you are building a circuit or just want to understand what your electricity bill means, Ohm's law is the way to go.
Explore other categories
Math
Percentages, proportions and equations explained step by step.
Explore →Geometry
Areas, volumes and the Pythagorean theorem with figures and examples.
Explore →Conversions
Units of measurement and number bases, from kilometers to binary.
Explore →Daily Life
Dates, deadlines, age and averages for everyday calculations.
Explore →Utilities
Word counter and secure password generator, right in your browser.
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