Standard gravity (g₀)
The standard acceleration of free fall, exactly 9.80665 m/s². Accelerations are often quoted as multiples of it ("5 g").
What is a standard gravity?
- Symbol
- g₀
- Quantity
- Acceleration
- Unit system
- other
- Definition
- The standard acceleration of free fall, exactly 9.80665 m/s². Accelerations are often quoted as multiples of it ("5 g").
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used to express g-forces on pilots, astronauts and riders, crash test loads and accelerometer ranges (such as ±16 g).
Standard gravity in other acceleration units
- 1 g₀ = 9.80665 m/s²Standard gravity to Meter per second squared converter
- 1 g₀ = 980.665 GalGal (galileo)
- 1 g₀ ≈ 32.17404856 ft/s²Foot per second squared
- 1 g₀ ≈ 386.0885827 in/s²Inch per second squared
Standard gravity quick reference
| Standard gravity | Meter per second squared | Gal (galileo) | Foot per second squared |
|---|---|---|---|
| 1 g₀ | = 9.80665 m/s² | = 980.665 Gal | ≈ 32.17404856 ft/s² |
| 10 g₀ | = 98.0665 m/s² | = 9806.65 Gal | ≈ 321.7404856 ft/s² |
| 100 g₀ | = 980.665 m/s² | = 98066.5 Gal | ≈ 3217.404856 ft/s² |
| 1000 g₀ | = 9806.65 m/s² | = 980665 Gal | ≈ 32174.04856 ft/s² |
Where the standard gravity fits
The next smaller acceleration unit is the meter per second squared (m/s²). 1 g₀ = 9.80665 m/s², and 1 m/s² ≈ 0.1019716213 g₀.
Frequently asked questions
- How many meters per second squared are in one standard gravity?
- One standard gravity = 9.80665 m/s² (meters per second squared).
- How many galileos are in one standard gravity?
- One standard gravity = 980.665 Gal (galileos).
- How many feet per second squared are in one standard gravity?
- One standard gravity ≈ 32.17404856 ft/s² (feet per second squared).