Physics · Special relativity

Relativistic kinetic energy from mass and speed

Calculate relativistic kinetic energy using the displayed relationship and entered values.

Published · R0

Method and scope

K = (γ − 1)mc², γ = 1 ÷ √(1 − v²/c²)

Use relativistic kinetic energy from mass and speed for educational calculation or a clearly scoped arithmetic estimate. Intended for Learners, General educational use.

Inputs
  • Rest mass — kg
  • Object speed relative to observer — m/s
SOURCE AND LIMITS

Assumptions: The displayed equation is applied to the entered values in the declared units. Any financial rate is interpreted per the period stated in its input label; no jurisdiction-specific fees, taxes, or product terms are inferred.

Limitations: Review the equation, input units, assumptions, and method steps before using the result. This tool is not professional advice.

Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.
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