Relativistic Energy Calculator

Calculate rest energy, kinetic energy, and total relativistic energy

Formulas Used

Rest energy: E₀ = mc²

Total energy: E = γmc²

Kinetic energy: KE = (γ - 1)mc²

Energy-momentum relation: E² = (pc)² + (mc²)²

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.