Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Lorentz Transformation Calculator

Transforms the spacetime coordinates (x, t) of an event from one inertial reference frame to another moving at relativistic velocity. Used in special relativity to reconcile observations made by different observers.

Position (x) (m)

Time (t) (s)

Relative Velocity (m/s)

Calculate

Fill in the required fields to see your result.

Relativity

Cosmological Redshift Calculator

Computes cosmological redshift, recession velocity, comoving distance, or the Hubble time from redshift z and the Hubble constant. Ideal for astronomy students and researchers analyzing galaxy observations.

Redshift (z)

Hubble Constant (km/s/Mpc)

Calculate

Fill in the required fields to see your result.

Key differences

	Lorentz Transformation Calculator	Cosmological Redshift Calculator
Category	Relativity	Relativity
Inputs required	4	3
Result	Transformed Value (varies)	Calculated Value (Mpc)
What it does	Transforms the spacetime coordinates (x, t) of an event from one inertial reference frame to another moving at relativistic velocity. Used in special relativity to reconcile observations made by different observers.	Computes cosmological redshift, recession velocity, comoving distance, or the Hubble time from redshift z and the Hubble constant. Ideal for astronomy students and researchers analyzing galaxy observations.