Newton's Second Law (F = ma) Calculator
Force from mass and acceleration, with speed and distance after a time.
kg
m/s²
s
How it works
F = m × a. With constant acceleration from rest, speed v = a × t and distance s = ½ a t². Using 9.8 m/s² gives the weight force of the mass at Earth's surface. Example: with the default values, force (n) comes to 98.
FAQ
Is this calculator free?
Yes. No signup is needed and nothing you enter is stored.
Is the result exact?
Results are rounded for display. For financial, medical, or legal decisions, confirm with a professional.
Do my numbers leave my device?
No. The calculation runs in your browser.