Redshift To Velocity Calculator


Calculating the velocity of an object undergoing redshift is a crucial task in astrophysics. The redshift to velocity calculator simplifies this process, allowing scientists and enthusiasts to determine the velocity of distant celestial bodies with ease. In this article, we will provide a step-by-step guide on how to use the calculator, the underlying formula, an example solve, frequently asked questions, and a conclusion.

How to Use:

To use the redshift to velocity calculator, follow these simple steps:

  1. Input the redshift value into the designated text field.
  2. Click the “Calculate” button to execute the calculation.
  3. The result, representing the velocity, will be displayed within the form.


The formula used in the calculator is based on the Doppler formula for redshift, which relates the observed wavelength (λobs​) to the emitted wavelength (λem​):

The velocity (v) can be calculated using the redshift (z) with the following equation:

v=z × c

Where c is the speed of light.

Example Solve:

Let’s consider an example where the redshift (z) is 0.05:


Assuming the speed of light (c) is 3×1083×108 meters per second:


Q1: What is redshift in astrophysics?

Redshift is a phenomenon in which light from an object moving away from an observer is shifted towards the longer-wavelength, or red, end of the electromagnetic spectrum.

Q2: How accurate is the redshift to velocity calculator?

The calculator provides accurate results based on the Doppler formula. However, precision may vary based on the accuracy of input values.

Q3: Can the calculator handle negative redshift values?

No, the calculator assumes positive redshift values only.


The redshift to velocity calculator simplifies complex astrophysical calculations, allowing users to determine the velocity of distant objects accurately. Understanding the redshift phenomenon and utilizing the Doppler formula enhances our comprehension of the universe.

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