Mass–energy equivalence

Gives the energy content of a body at rest as the product of its mass and the square of the speed of light. It is used to convert between mass and energy in relativity and nuclear physics.

E = mc^2

What the symbols mean

energy (joules, J)
mass (kilograms, kg)
speed of light in vacuum (metres per second, m/s)

About this formula

  • FieldPhysics
  • TopicRelativity
  • LevelUniversity
  • Also calledmass-energy equivalence, equivalence of mass and energy, Einstein formula, energy mass relation, rest energy formula, Einstein mass energy equation
  • SourceWikidata Q35875

Write it in Obsidian

MathLive is a free visual math editor for Obsidian. Run Find a formula, type “mass–energy equivalence”, and it goes into your note as editable LaTeX. You can also scan formulas from screenshots, PDFs and handwriting.

Related formulas