Acceleration Converter
Acceleration measures how quickly velocity changes over time. The SI unit is metres per second squared (m/s²), but engineering and aviation fields commonly use ft/s², g-force (1 g = 9.80665 m/s²), and km/h/s. This converter lets you switch between all four units instantly using precise conversion factors.
Whether you are working on a physics problem, analysing vehicle performance, or designing aerospace systems, accurate unit conversion is essential. The g-force unit is especially useful in contexts such as roller-coaster design, pilot training, and crash-test analysis where human tolerance limits are expressed in multiples of standard gravity.
How it works
All conversions go through the base unit m/s². To convert from unit A to unit B: result = value × factor(A) / factor(B), where factor(m/s²)=1, factor(ft/s²)=0.3048, factor(g)=9.80665, factor(km/h/s)=1/3.6≈0.27778.
Use cases
- Converting vehicle 0–100 km/h acceleration data between m/s² and g-force
- Physics homework problems requiring unit consistency in kinematics equations
- Aerospace and aviation analysis where g-force limits are critical
- Robotics and motion-control engineering using ft/s² or km/h/s specs
- Sports science: comparing sprint acceleration in g vs. m/s²
Frequently asked questions
How do I convert m/s² to g-force?
Divide the acceleration in m/s² by 9.80665, which is the standard gravity value. For example, 19.6 m/s² is about 2 g. Going the other way, multiply the number of g by 9.80665 to get m/s².
How does this acceleration converter work?
Every conversion passes through the base unit m/s² using the formula result = value × factor(A) / factor(B). The factors are 1 for m/s², 0.3048 for ft/s², 9.80665 for g, and 1/3.6 (about 0.27778) for km/h/s. This two-step approach keeps every pairing of units consistent and precise.
What is 1 g of acceleration equal to?
One g equals exactly 9.80665 m/s², the internationally agreed standard acceleration due to gravity at Earth's surface. In imperial units that is about 32.174 ft/s², and in automotive terms it is roughly 35.3 km/h of speed gained every second. It is widely used in aviation, roller-coaster design, and crash-test analysis.
How do I convert 0–100 km/h times into acceleration units?
Divide 100 km/h by the time in seconds to get the average acceleration in km/h/s, then convert to other units. For example, a car that does 0–100 km/h in 5 seconds averages 20 km/h/s, which is about 5.56 m/s² or roughly 0.57 g. Real-world acceleration is not constant, so this is an average figure.
What is the difference between ft/s² and m/s²?
Both measure the rate of change of velocity, but ft/s² uses feet while m/s² uses metres, the SI unit. Since 1 foot equals exactly 0.3048 metres, multiply ft/s² by 0.3048 to get m/s², or divide m/s² by 0.3048 to get ft/s². Ft/s² is still common in US engineering and aviation documentation.