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Both calculators run independently — change the inputs on either side to compare results.
Relativity
Relativistic Energy Calculator
Compute the total relativistic energy E = γmc² of a particle from its rest mass and velocity. Reduces to E = mc² at rest and grows without bound as velocity approaches the speed of light.
Fill in the required fields to see your result.
Relativity
Lorentz Factor Calculator
Compute the Lorentz factor γ = 1/√(1 − (v/c)²), the central quantity of special relativity that scales time dilation, length contraction, relativistic mass, momentum, and energy. Returns a dimensionless number ≥ 1.
Fill in the required fields to see your result.
Key differences
| Relativistic Energy Calculator | Lorentz Factor Calculator | |
|---|---|---|
| Category | Relativity | Relativity |
| Inputs required | 2 | 1 |
| Result | Total Energy (Joules) | Lorentz Factor (γ) |
| What it does | Compute the total relativistic energy E = γmc² of a particle from its rest mass and velocity. Reduces to E = mc² at rest and grows without bound as velocity approaches the speed of light. | Compute the Lorentz factor γ = 1/√(1 − (v/c)²), the central quantity of special relativity that scales time dilation, length contraction, relativistic mass, momentum, and energy. Returns a dimensionless number ≥ 1. |