Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
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.
Relativity
Length Contraction Calculator
Compute the contracted length of an object measured by an observer relative to whom it moves at high velocity, using special relativity. Returns the contracted length in the same units as the rest length.
Fill in the required fields to see your result.
Key differences
| Lorentz Factor Calculator | Length Contraction Calculator | |
|---|---|---|
| Category | Relativity | Relativity |
| Inputs required | 1 | 3 |
| Result | Lorentz Factor (γ) | Contracted Length (length units) |
| What it does | 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. | Compute the contracted length of an object measured by an observer relative to whom it moves at high velocity, using special relativity. Returns the contracted length in the same units as the rest length. |