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Both calculators run independently — change the inputs on either side to compare results.
Relativity
Rest Mass Energy Calculator
Calculates the intrinsic energy locked in an object's mass using Einstein's famous E = mc². Use it to see how much energy any given mass theoretically contains.
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
| Rest Mass Energy Calculator | Lorentz Factor Calculator | |
|---|---|---|
| Category | Relativity | Relativity |
| Inputs required | 1 | 1 |
| Result | Rest Energy (Joules) | Lorentz Factor (γ) |
| What it does | Calculates the intrinsic energy locked in an object's mass using Einstein's famous E = mc². Use it to see how much energy any given mass theoretically contains. | 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. |