E = mc² Calculator

Instructions:
  • Enter the mass in the "Mass" field and select the unit of mass.
  • Click "Calculate" to calculate the energy based on the mass and the speed of light.
  • Choose the desired unit for energy from the dropdown.
  • The calculated energy will be displayed in the "Energy" field.
  • Click "Copy" to copy the result to the clipboard.
m/s
Energy vs. Mass
Calculation and Explanation

Formula: E = mc²

Where:

  • E is the energy in joules (J).
  • m is the mass in kilograms (kg).
  • c is the speed of light in meters per second (m/s), approximately 299,792,458 m/s.

This calculator computes the energy (E) based on the mass (m) entered by the user and the speed of light (c) using the famous equation E=mc².

Calculation History

    The equation E = mc² is one of the most famous equations in the world. It was developed by Albert Einstein in 1905 as part of his theory of special relativity. The equation expresses the relationship between mass and energy, and it has many important applications in physics and engineering.

    Concepts

    The equation E = mc² expresses the relationship between mass and energy. It states that mass and energy are two forms of the same thing, and that they can be converted into each other. The equation shows that a small mass can be converted into much energy, and vice versa. This is because the speed of light is a very large number, and when it is squared, it becomes even larger. The equation also shows that the amount of energy obtained from a given mass is proportional to the speed of light squared.

    Formulae

    The equation E = mc² is a simple formula that expresses the relationship between mass and energy. It states that an object’s energy (E) equals its mass (m) times the speed of light © squared. The formula can be expressed mathematically as follows:

    E = mc²

    Where:

    • E is the energy of the object
    • m is the mass of the object
    • c is the speed of light

    Benefits

    The equation E = mc² has many important applications in physics and engineering. Some of the benefits of the equation include:

    • It explains the relationship between mass and energy
    • It provides a way to calculate the amount of energy that can be obtained from a given amount of mass
    • It has many important applications in nuclear physics, including the development of nuclear power and nuclear weapons
    • It has many important applications in particle physics, including the study of subatomic particles

    Interesting Facts

    • The equation E = mc² is one of the most famous equations in the world.
    • The equation was developed by Albert Einstein in 1905 as part of his theory of special relativity.
    • The equation shows that mass and energy are two forms of the same thing, and that they can be converted into each other.
    • The equation has many important applications in physics and engineering.

    Last Updated : 11 December, 2023

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