Acceleration Converter
Convert between acceleration units instantly — m/s², g-force, ft/s², km/h/s and more. Type any value to update all fields simultaneously.
Common Acceleration Conversions
What is 1g in m/s²?
1g (standard gravity) equals exactly 9.80665 m/s². This is the internationally defined value — the standard acceleration due to Earth's gravity at sea level. A person sitting still experiences 1g. Fighter pilots can experience 9g in tight turns, which is near the limit of human tolerance without a pressure suit.
How do I convert km/h/s to m/s²?
Divide by 3.6. For example, a car that accelerates from 0 to 100 km/h in 8 seconds has an average acceleration of 100 ÷ 8 = 12.5 km/h/s = 12.5 ÷ 3.6 ≈ 3.47 m/s² ≈ 0.354g. This is a typical figure for a performance road car.
What does 0–60 mph in X seconds mean in m/s²?
Divide 60 by the time in seconds to get mph/s, then multiply by 0.44704 to get m/s². A 0–60 mph time of 5 seconds = 12 mph/s = 5.36 m/s² ≈ 0.547g. A Tesla Model S Plaid does 0–60 in under 2 seconds ≈ 13.4 m/s² ≈ 1.37g.
What is a Gal (galileo)?
A Gal equals 1 cm/s² = 0.01 m/s², named after Galileo Galilei. It is used in geophysics and gravimetry. Earth's surface gravity of approximately 9.81 m/s² = 981 Gal. Variations in local gravity due to geology and altitude are measured in milliGal (0.00001 m/s²).
What acceleration does a human survive?
The human body can typically withstand 4–6g for a few seconds before loss of consciousness (g-LOC). Trained fighter pilots in pressure suits can sustain up to 9g briefly. Car crash safety standards often reference 30–50g peak values — the duration (milliseconds) is what matters as much as the magnitude.