v Hubble
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Hubble Expansion Velocity Calculator is a useful tool for calculating the expansion velocity of the universe from known distances in megaparsecs (Mpc).
This calculator uses Hubble's formula, which relates the expansion velocity of the universe to the distance of galaxies from us.
The formula is: H₀·d, where H₀ is the Hubble constant (approximately 70 km/s/Mpc) and d is the distance in megaparsecs. This calculator is useful for astronomers and astronomy students who need to calculate expansion velocities at different scales.
However, it is worth noting that the Hubble constant may vary depending on the region of the universe and the time considered.
Frequently asked questions
What is the Hubble constant?
The Hubble constant (H₀) is a measure of the expansion velocity of the universe per unit distance. It is approximately 70 km/s/Mpc.
When should I use this calculator?
This calculator is useful for calculating expansion velocities at different scales, especially in astronomy problems that involve distances in megaparsecs.
What is a megaparsec?
A megaparsec (Mpc) is a distance unit that equals millions of light-years (ly). It is a common measure used in astronomy to describe large distances in the universe.
Can I use this calculator for other formulas?
No, this calculator was developed specifically for calculating the expansion velocity of the universe using Hubble's formula. For other formulas, you will need separate calculators.