Hubble time (billion years) to km/s per megaparsec
Type a value in Gyr (1/H₀) to get it in km/s/Mpc instantly.
14.51km/s/Mpc
Nothing on our list is smaller: the Planck satellite value is 4.6× faster. Its Hubble time is 67.4 billion years.
Convert the other way: km/s/Mpc to Gyr (1/H₀)
What it means
How fast is that expansion?
The Hubble time 1/H₀ is close to, but not the same as, the age of the universe, which depends on how expansion changed over time (13.8 billion years).
The math
How to convert Gyr (1/H₀) to km/s/Mpc
Hubble time = 1 ÷ H₀ = 977.8 ÷ H₀ (km/s/Mpc) billion years; H₀ in s⁻¹ = H₀ ÷ 3.0857 × 10¹⁹.
Example: 67.4 Gyr (1/H₀) = 14.5073 km/s/Mpc.
Every unit
That expansion rate in every unit
Tables
Gyr (1/H₀) to km/s/Mpc conversion table
| Gyr (1/H₀) | km/s/Mpc |
|---|---|
| 50 Gyr (1/H₀) | 19.5558 km/s/Mpc |
| 55 Gyr (1/H₀) | 17.778 km/s/Mpc |
| 60 Gyr (1/H₀) | 16.2965 km/s/Mpc |
| 65 Gyr (1/H₀) | 15.043 km/s/Mpc |
| 67.4 Gyr (1/H₀) | 14.5073 km/s/Mpc |
| 69.8 Gyr (1/H₀) | 14.0085 km/s/Mpc |
| 70 Gyr (1/H₀) | 13.9685 km/s/Mpc |
| 73 Gyr (1/H₀) | 13.3944 km/s/Mpc |
| 75 Gyr (1/H₀) | 13.0372 km/s/Mpc |
| 80 Gyr (1/H₀) | 12.2224 km/s/Mpc |
| 100 Gyr (1/H₀) | 9.77792 km/s/Mpc |
km/s/Mpc to Gyr (1/H₀) conversion table
| km/s/Mpc | Gyr (1/H₀) |
|---|---|
| 50 km/s/Mpc | 19.5558 Gyr (1/H₀) |
| 55 km/s/Mpc | 17.778 Gyr (1/H₀) |
| 60 km/s/Mpc | 16.2965 Gyr (1/H₀) |
| 65 km/s/Mpc | 15.043 Gyr (1/H₀) |
| 67.4 km/s/Mpc | 14.5073 Gyr (1/H₀) |
| 69.8 km/s/Mpc | 14.0085 Gyr (1/H₀) |
| 70 km/s/Mpc | 13.9685 Gyr (1/H₀) |
| 73 km/s/Mpc | 13.3944 Gyr (1/H₀) |
| 75 km/s/Mpc | 13.0372 Gyr (1/H₀) |
| 80 km/s/Mpc | 12.2224 Gyr (1/H₀) |
| 100 km/s/Mpc | 9.77792 Gyr (1/H₀) |
Quick answers
Quick answers
- How many km/s/Mpc is 1 Gyr (1/H₀)?
- 1 Gyr (1/H₀) is 977.792 km/s/Mpc.
- How many km/s/Mpc is 10 Gyr (1/H₀)?
- 10 Gyr (1/H₀) is 97.7792 km/s/Mpc.
- How many km/s/Mpc is 67.4 Gyr (1/H₀)?
- 67.4 Gyr (1/H₀) is 14.5073 km/s/Mpc.
The units
About these units
Hubble time (billion years) (Gyr (1/H₀))
The inverse of H₀ in billions of years.
Km/s per megaparsec (km/s/Mpc)
The standard unit of H₀.
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