LaTeX
E=mc^2Variables
- E: rest energy
- m: mass
- c: speed of light
How to use this formula
Relates rest energy to mass.
Important notes
- This is the rest-energy relation, not a complete statement of all relativistic energy.
Quick example
One kilogram corresponds to about 9×10¹⁶ joules.
Applicability, worked calculation, and verification
Assumptions and domain checks
- This is the rest-energy relation, not a complete statement of all relativistic energy.
- Use dimensionally consistent units and the sign, coordinate, and reference-frame conventions stated for the problem.
Worked example
One kilogram corresponds to about 9×10¹⁶ joules.
Common mistakes
- Do not combine values with inconsistent units or sign conventions in Mass Energy Equivalence; perform a dimensional check before accepting the result.
- Verify the result of Mass Energy Equivalence with a known case, inverse operation, dimensional check, or independent calculation before publishing it.
Continue the workflow
Use Mass Energy Equivalence in your own work
- Check the domainMatch the variables and assumptions to the problem before substituting values.
- Copy the exact notationPreserve grouping, signs, and exponents in
E=mc^2. - Edit or convertOpen the expression in the LaTeX editor, then export it for your document or web page.
Review and verification
Last reviewed: 2026-07-23
Automated quality check: Kept noindex until the missing evidence is supplied.
Formula references
- College Physics 2eOpenStax, Rice University — Reviewed physical quantities, units, mechanics, energy, waves, electricity, and applied formulas.
Frequently asked questions
What is the Mass Energy Equivalence used for?
Relates rest energy to mass.
Can I copy this formula as LaTeX?
Yes. Copy E=mc^2 or open it in the LaTeX editor.
What should I check before using it?
Confirm that each variable, unit, domain restriction, and assumption matches the problem.