Case 1
- Acceleration
- 9.81m/s²
1.000g
Open with these valuesG-Force Calculator
2.998g
Result: 2.998 gDivide the acceleration by standard gravity, g₀ = 9.80665 m/s². Standing still is 1 g, a roller coaster peaks near 4–5 g, and a fighter pilot in a hard turn pulls about 9 g. Despite the name it is an acceleration, not a force in newtons.
The numbers at a glance
| Acceleration (m/s²) | Result (g) |
|---|---|
| 0.00 | 0.000 |
| 10.00 | 1.020 |
| 20.00 | 2.039 |
| 29.40Your value | 2.998 |
| 30.00 | 3.059 |
| 40.00 | 4.079 |
| 50.00 | 5.099 |
Worked examples
Case 2
- Acceleration
- 29.4m/s²
2.998g
Open with these valuesCase 3
- Acceleration
- 98.07m/s²
10.000g
Open with these valuesHow it's calculated
g-force = a ÷ 9.80665 m/s²
- StepEnter the acceleration in metres per second squared.
- StepRead the result as a multiple of standard gravity.
- ResultFor a force in newtons, multiply the acceleration by the mass instead.
Reference table
| Acceleration (m/s²) | Roughly | g-force (g) |
|---|---|---|
| 0 | Weightless, free fall | 0.000 |
| 9.80665 | Standing on Earth | 1.000 |
| 19.6133 | Hard braking in a jet | 2.000 |
| 29.4 | Roller coaster loop | 2.998 |
| 98.0665 | Fighter pilot, near the limit | 10.000 |
Questions
How do I calculate g-force?
Divide the acceleration by standard gravity: g-force = a ÷ g₀, where g₀ = 9.80665 m/s². For example, an acceleration of 29.4 m/s² gives 29.4 ÷ 9.80665 ≈ 3 g. An acceleration of exactly 9.80665 m/s² equals 1 g.
What is g-force?
g-force is an acceleration expressed as a multiple of standard gravity, the pull you feel resting on Earth. One g is the acceleration of free fall at the surface, about 9.81 m/s². It describes how intense an acceleration is, not a force measured in newtons.
What value is used for standard gravity?
Standard gravity (g₀) is defined by international convention as exactly 9.80665 m/s². It is a fixed reference value, not a measurement, so the conversion is an exact division. Local gravity varies slightly with latitude and altitude.
How many g do people experience in real life?
Standing still you are at 1 g. A roller coaster typically peaks around 4–5 g for a moment, and fighter pilots in a hard turn can pull about 9 g, near the limit a trained, suited person tolerates while conscious. Astronauts feel a few g during launch and re-entry.
Is g-force actually a force?
No. Despite the name, g-force is an acceleration written in units of standard gravity, not a force in newtons. To get an actual force, multiply the acceleration in m/s² by the object's mass, F = m × a.
Sources and last check
Information, not professional advice.