Estimate total accelerate-stop distance using acceleration distance, reaction distance, braking distance, and an optional safety margin. This free aviation calculator is designed as a training and runway performance planning aid only.
Enter the acceleration, reaction, and braking distances to estimate total accelerate-stop distance. You can also apply an optional safety margin.
Use this calculator for planning awareness only, not for operational runway acceptance decisions.
Accelerate-stop distance is the runway distance required for an aircraft to accelerate, recognize a need to reject the takeoff, and then come to a stop on the runway.
It is an important runway performance concept because it helps pilots understand how much runway may be needed if a takeoff is rejected after acceleration has already begun.
Reaction distance helps represent the distance traveled while the pilot recognizes a problem and initiates the rejected takeoff response.
No. This calculator is a simplified estimator for planning and training. Certified or approved performance values come from aircraft-specific data and procedures.
Yes. Many pilots and operators use additional runway margin in planning to help account for variability in technique and conditions.
No. This simplified estimator does not directly model those factors. Official aircraft performance data must always be used for real-world decisions.