Relativistic Kinetic Energy Calculator

Compute relativistic kinetic energy KE = (γ-1)mc² and compare with classical ½mv² for high-speed particles.

Frequently Asked Questions

What is relativistic kinetic energy?

KE = (γ-1)mc², where γ is the Lorentz factor. It diverges as v approaches c.

When should I use this instead of ½mv²?

Above about 0.1c the difference is over 1%; above 0.5c it's enormous.

What is the Lorentz factor?

γ = 1 / √(1 - v²/c²). At rest γ = 1; near c, γ blows up.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.