Use Newton's second law calculator to solve force, mass, or acceleration with F = ma. Includes unit conversion for physics and engineering problems.
Use this Newton's second law calculator to solve F = m × a online. Enter any two values to calculate the third: find force from mass and acceleration, rearrange the formula to get mass from force and acceleration, or calculate acceleration from force and mass.
This tool is built for the search intent users typically have around F=ma, Newton's second law formula, and quick physics homework checks. It also helps when you need unit conversion before the formula is applied, including common combinations such as newtons, kilonewtons, kilograms, grams, pounds, m/s², ft/s², and standard gravity g.
The calculator is useful for school physics, introductory mechanics, and basic engineering problems where you need a fast answer without rewriting the equation by hand. If you are checking a force example, mass-acceleration relationship, or a unit-based F=ma problem, the inputs and conversions are handled automatically.
$$\vec{F} = m \times \vec{a}$$
SI units for Newton's second law
| Variable | Symbol | SI Unit |
|---|---|---|
| Force | F | newton (N) |
| Mass / Weight | m | kilograms (kg) |
| Acceleration | a | metres per second squared (m/s²) |
Newton's Second Law Calculator FAQ
What is Newton's second law of motion?
Newton's second law links force, mass, and acceleration: F = m × a. If two values are known, the third can be calculated.
What can this calculator find?
This calculator can find force, mass, or acceleration. Select one value to find, then enter the other two values.
Can I use different units?
Yes. You can choose units for force, mass, and acceleration. The calculator converts units before and after calculation.
Which formulas are used?
The calculator uses F = m × a, m = F / a, and a = F / m, based on which value you choose to calculate.
