Acceleration Converter | m/s² g-force

What is 1g of acceleration in m/s² and ft/s²?

Standard gravitational acceleration (1g) = 9.80665 m/s² = 32.174 ft/s². This is the acceleration of a freely falling object near Earth’s surface (ignoring air resistance). It is used as a reference for g-force: a person sitting still experiences 1g. An object in free fall experiences 0g (weightlessness). The constant is 9.80665 m/s² by international definition.

How many g-forces do fighter pilots and astronauts experience?

Trained fighter pilots can sustain 7–9g briefly using anti-G straining maneuvers (tensing legs and abdomen). Without training or a G-suit, 4–5g causes tunnel vision, then blackout (G-LOC). Formula 1 cars experience 4–6g in fast corners. Roller coasters typically peak at 3–4g. Space Shuttle launch was about 3g maximum. High-speed car crashes can exceed 40–50g.

How do I convert m/s² to km/h/s for car acceleration specs?

Multiply m/s² by 3.6 to get km/h/s. Example: 1g = 9.81 m/s² = 35.3 km/h/s. A car accelerating at 5 m/s² = 18 km/h per second. This unit (km/h/s) is intuitive for evaluating car performance: it tells you how many km/h the car gains each second. A 0–100 km/h time can be estimated: 100 km/h ÷ (acceleration in km/h/s) = seconds.

What is the difference between Earth gravity and gravity on other planets?

Earth = 9.81 m/s² (1g). Moon = 1.62 m/s² (0.165g). Mars = 3.72 m/s² (0.379g). Jupiter = 24.79 m/s² (2.528g). The Moon’s gravity is about 1/6 of Earth’s, so a 70 kg person weighs only 11.7 kg-force there. On Jupiter, that person would weigh 177 kg-force — nearly 2.5 times heavier. These differences are critical for spacecraft design and human physiology in space.

How do you calculate distance traveled from acceleration and time?

Using kinematics: distance = ½ × acceleration × time². Example: starting from rest at 1g (9.81 m/s²) for 3 seconds: d = 0.5 × 9.81 × 9 = 44.1 meters, reaching a speed of 9.81 × 3 = 29.4 m/s = 105.9 km/h. This formula is used for 0–60 mph and 0–100 km/h time estimates: 100 km/h = 27.78 m/s, so time = speed ÷ acceleration.