Calculate force from mass and a change in velocity over a time or distance, find force from power and speed, or find final velocity from a force.

For constant mass in one dimension: average net force = mass × velocity change ÷ elapsed time. Velocity alone is insufficient.

Blank means 0 (starting from rest). Signed in time modes; nonnegative in distance mode.

Signed in time mode; use nonnegative speed in distance mode.

Result unit

Velocity to Force Formula

The following equation is used to calculate the Velocity to Force.

F = m × (v / t)
  • Where F is the force (N)
  • m is the mass (kg)
  • v is the change in velocity (m/s)
  • t is the change in time (s)

For constant mass, divide the change in velocity by the elapsed time, then multiply by mass to find the average net force. Velocity alone does not determine force.

Newtons to Pound-force and Kilogram-force Conversion Table
Newtons (N) Pound-force (lbf) Kilogram-force (kgf)
0.50.1120.051
10.2250.102
20.4500.204
51.1240.510
102.2481.020
204.4962.039
255.6202.549
306.7443.059
408.9924.079
5011.2405.099
6013.4896.118
7516.8617.648
8017.9858.158
9020.2339.177
10022.48110.197
15033.72115.296
20044.96220.394
25056.20225.493
500112.40550.986
1000224.809101.972
Force unit conversions: 1 N = 0.224809 lbf = 0.101972 kgf. Also, 1 lbf ≈ 4.44822 N; 1 kgf ≈ 9.80665 N.

Can you Convert Velocity to Force?

Additional information is required: constant mass, a velocity change, and its elapsed time determine average net force. The distance model assumes constant net force with no reversal; the power model determines a parallel applied force, which may be balanced by resistance at steady speed.

How to Convert Velocity to Force?

Example Problem:

The following example outlines the steps and information needed to convert Velocity to Force.

First, determine the mass of the object. In this example, the mass of the moving object is measured to be 5 kg.

Next, determine the change in velocity. This object undergoes a change in velocity of 15 m/s.

Next, determine the change in time. This change in velocity occurred over 5 seconds.

Finally, calculate the force from velocity using the formula above:

F = m * (v/t)

F = 5 * (15/5)

F = 15 N