Energy Calculator - Calculate Kinetic & Potential Energy Online
Free online energy calculator to calculate kinetic energy, potential energy, and total energy. Perfect for physics students and energy analysis.
Energy Calculation
Energy Results
Enter mass and other values to calculate energy
About Energy Calculator
The Energy Calculator helps you calculate different types of energy using fundamental physics formulas.
Types of Energy:
- Kinetic Energy: Energy of motion
- Potential Energy: Stored energy
- Total Energy: Sum of all energy types
Energy Formulas:
- Kinetic Energy: KE = ½mv²
- Gravitational Potential Energy: PE = mgh
- Spring Potential Energy: PE = ½kx²
- Total Energy: E = KE + PE
Variables:
- m: Mass (kg)
- v: Velocity (m/s)
- h: Height (m)
- k: Spring constant (N/m)
- x: Displacement (m)
Energy Conservation:
- Energy cannot be created or destroyed
- Energy can only be transformed
- Total energy remains constant
- Kinetic and potential energy can convert
Applications:
- Physics education and homework
- Engineering calculations
- Mechanical systems analysis
- Renewable energy systems
- Sports science and biomechanics
Units:
- Energy: Joules (J)
- Mass: Kilograms (kg)
- Velocity: m/s
- Height: Meters (m)
Note: This calculator assumes classical mechanics. For relativistic effects or quantum mechanics, use specialized formulas.
Frequently Asked Questions
What is kinetic energy?
Kinetic energy is the energy of motion. It depends on the mass and velocity of an object: KE = ½mv². The faster an object moves, the more kinetic energy it has.
What is potential energy?
Potential energy is stored energy that depends on an object's position or configuration. Common types include gravitational potential energy (mgh) and spring potential energy (½kx²).
How do I calculate total energy?
Total energy is the sum of all energy types: E = KE + PE. In a closed system, total energy is conserved, meaning it remains constant.
What's the difference between energy and power?
Energy is the ability to do work (measured in Joules), while power is the rate at which energy is transferred or work is done (measured in Watts). Power = Energy/Time.
Can energy be negative?
Yes, energy can be negative. This often occurs with potential energy when using reference points below the object's position, or in quantum mechanics.