Explore the solar system
Select a planet to learn about it.
PHYSICS TOOLBOX
Find an equation. Work it out.
Search a topic, choose what you want to find, and follow the working.
Search by topic, equation or quantity.
EQUATION SOLVER
Choose any physics equation
Pick a relationship, select the missing value and enter the numbers you know.
Calculate an answer
We’ll rearrange the equation and show the substituted values.
Your answer
Enter your values to see the answer and working.
MOTION
Speed, distance, time and acceleration
Explore how far an object travels, how quickly it moves, and how its velocity changes.
Motion calculator
Choose the motion relationship and solve for any one value.
Your answer
Enter your values to see the answer and working.
FORCES
Connect force, mass and movement
Calculate resultant force, weight or momentum from the values you know.
Force calculator
Choose a relationship, find the missing value and see the working.
Your answer
Enter your values to see the answer and working.
ENERGY
Calculate energy, work and power
Use kinetic energy, gravitational potential energy, work done and power relationships.
Energy calculator
Choose what to find. The result includes the rearranged equation and substituted values.
Your answer
Enter your values to see the answer and working.
ELECTRICITY
Work with current, voltage and resistance
Use circuit relationships to solve for potential difference, current, resistance, power or charge.
Electricity calculator
Enter two known values to calculate the third.
Your answer
Enter your values to see the answer and working.
DENSITY & PRESSURE
Relate mass, volume, force and area
Calculate density from mass and volume, or pressure from force and area.
Density and pressure calculator
Choose an equation and enter the two values you already know.
Your answer
Enter your values to see the answer and working.
WAVES
Find wave speed, frequency or wavelength
Use the wave equation to connect how fast a wave moves with its frequency and wavelength.
Wave calculator
Enter two known values to calculate the third.
Your answer
Enter your values to see the answer and working.
WHY PHYSICS SOLVER?
Get the answer and see how it works.
Choose the physics relationship you need, enter the values you know, and get a result with the rearranged equation and working shown.
- Clear units beside every value
- Step-by-step substitution
- Tools for the physics topics you study
HOW TO USE IT
From known values to a worked answer.
Use the topic tabs or search for a quantity such as speed, force or voltage. Each calculator guides you through the same simple steps.
- Choose an equation from the topic.
- Select the value you want to find.
- Enter the other values with the units shown.
- Calculate and follow the working.
WHEN SHOULD YOU USE IT?
Practise, check, and build confidence.
Use Physics Solver when you want a quick way to practise equations or check your method while revising.
- Revise a topic before a lesson or test
- Practise rearranging familiar equations
- Check a calculation and its units
- Explore how the planets move in the solar system model
Use it to support your learning. For assessed work, show your own method and check your course requirements.
Explore the solar system