DIY Cost Tools
Acceleration Calculator
SCIENCE CALCULATOR
Calculate constant acceleration and estimated distance from starting speed, ending speed, and elapsed time.
How it works
The calculator assumes acceleration is constant over the full interval. It divides the velocity change by time and uses average velocity to estimate distance.
Formula
Acceleration = (final velocity − initial velocity) ÷ time. With constant acceleration, distance = [(initial + final) ÷ 2] × time.
Worked example
Changing from 0 to 27 m/s in 9 seconds gives 3 m/s² acceleration, an average velocity of 13.5 m/s, and 121.5 meters traveled.
Important limits
- The distance result is valid only for constant acceleration in a straight line.
- Speeds must use meters per second and time must use seconds.
- Air resistance, slopes, reaction time, and changing acceleration are not modeled.
Frequently asked questions
Can acceleration be negative?
Yes. A negative result means velocity decreased in the chosen positive direction.
What is m/s²?
It means velocity changes by that many meters per second during each second.
Sources and review notes
The calculator applies standard one-dimensional constant-acceleration relationships. Last reviewed September 29, 2026.