Km/s per megaparsec to per billion years
Type a value in km/s/Mpc to get it in Gyr⁻¹ instantly.
0.06893Gyr⁻¹
That's about the same as the Planck satellite value. Its Hubble time is 14.51 billion years.
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 km/s/Mpc to Gyr⁻¹
To convert km/s per megaparsec to per billion years, multiply by 0.00102271.
Example: 67.4 km/s/Mpc × 0.00102271 = 0.0689308 Gyr⁻¹.
In the other direction, 1 Gyr⁻¹ = 977.792 km/s/Mpc.
Every unit
That expansion rate in every unit
Tables
km/s/Mpc to Gyr⁻¹ conversion table
| km/s/Mpc | Gyr⁻¹ |
|---|---|
| 50 km/s/Mpc | 0.0511356 Gyr⁻¹ |
| 55 km/s/Mpc | 0.0562492 Gyr⁻¹ |
| 60 km/s/Mpc | 0.0613627 Gyr⁻¹ |
| 65 km/s/Mpc | 0.0664763 Gyr⁻¹ |
| 67.4 km/s/Mpc | 0.0689308 Gyr⁻¹ |
| 69.8 km/s/Mpc | 0.0713853 Gyr⁻¹ |
| 70 km/s/Mpc | 0.0715899 Gyr⁻¹ |
| 73 km/s/Mpc | 0.074658 Gyr⁻¹ |
| 75 km/s/Mpc | 0.0767034 Gyr⁻¹ |
| 80 km/s/Mpc | 0.081817 Gyr⁻¹ |
| 100 km/s/Mpc | 0.102271 Gyr⁻¹ |
Gyr⁻¹ to km/s/Mpc conversion table
| Gyr⁻¹ | km/s/Mpc |
|---|---|
| 50 Gyr⁻¹ | 48,889.6 km/s/Mpc |
| 55 Gyr⁻¹ | 53,778.6 km/s/Mpc |
| 60 Gyr⁻¹ | 58,667.5 km/s/Mpc |
| 65 Gyr⁻¹ | 63,556.5 km/s/Mpc |
| 67.4 Gyr⁻¹ | 65,903.2 km/s/Mpc |
| 69.8 Gyr⁻¹ | 68,249.9 km/s/Mpc |
| 70 Gyr⁻¹ | 68,445.5 km/s/Mpc |
| 73 Gyr⁻¹ | 71,378.8 km/s/Mpc |
| 75 Gyr⁻¹ | 73,334.4 km/s/Mpc |
| 80 Gyr⁻¹ | 78,223.4 km/s/Mpc |
| 100 Gyr⁻¹ | 97,779.2 km/s/Mpc |
Quick answers
Quick answers
- How many Gyr⁻¹ is 1 km/s/Mpc?
- 1 km/s/Mpc is 0.00102271 Gyr⁻¹.
- How many Gyr⁻¹ is 10 km/s/Mpc?
- 10 km/s/Mpc is 0.0102271 Gyr⁻¹.
- How many Gyr⁻¹ is 67.4 km/s/Mpc?
- 67.4 km/s/Mpc is 0.0689308 Gyr⁻¹.
The units
About these units
Km/s per megaparsec (km/s/Mpc)
The standard unit of H₀.
Per billion years (Gyr⁻¹)
H₀ as a rate per gigayear.
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