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Convert between all acceleration units instantly
| Description | m/s² | g-force |
|---|---|---|
| Standard gravity | 9.81 | 1.0 |
| Car braking | 3-10 | 0.3-1.0 |
| Roller coaster | 29-59 | 3-6 |
| Fighter jet turn | 88 | 9 |
| Space shuttle launch | 29 | 3 |
Acceleration is the rate of change of velocity over time. It measures how quickly an object speeds up, slows down, or changes direction. The SI unit is meters per second squared (m/s²), meaning the velocity changes by that many meters per second each second.
G-force is acceleration relative to Earth's gravity (9.80665 m/s²). Standing on Earth, you experience 1g. Astronauts during launch may experience 3g, and fighter pilots can experience up to 9g during extreme maneuvers.
1 m/s² equals approximately 0.102 g (1/9.80665).
The Gal (galileo) is used in gravimetry and seismology to measure small variations in gravitational acceleration. 1 Gal = 1 cm/s².
Trained pilots with g-suits can tolerate up to 9g for short periods. Untrained individuals may lose consciousness above 4-6g due to blood pooling.
Car performance is measured in 0-60 mph acceleration times. Sports cars can achieve 3-4 seconds (approximately 3.6 m/s²), while luxury sedans typically reach 6-8 seconds.
Velocity is how fast you are moving, while acceleration is how quickly your velocity changes. A car at constant speed has velocity but zero acceleration.
G-force provides an intuitive measure relative to Earth's gravity. It helps predict physiological effects on astronauts and structural loads on aircraft during maneuvers.