Force Calculator
Enter mass and acceleration to calculate force using Newton's Second Law (F=ma)
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About Force Calculator
Force is one of the most fundamental concepts in physics. According to Newton's Second Law, the net force acting on an object equals its mass multiplied by its acceleration (F=ma). This tool helps physics students, engineers, and teachers quickly calculate force magnitude, supporting multiple SI units for mechanics calculations, engineering design, and teaching demonstrations.
How to Use
- Enter the mass of the object (kg, g, or lb)
- Enter the acceleration (m/s², ft/s², etc.)
- Click calculate to get the force magnitude in Newtons (N)
Related Tools
- Force Unit Converter — Convert N, lbf and kgf
- Momentum Calculator — Calculate momentum
- Acceleration Converter — Acceleration unit conversion
What is Newton's Second Law?
Newton's Second Law states that the acceleration of an object is directly proportional to the net force and inversely proportional to its mass, expressed as F=ma. F is in Newtons (N), m in kilograms (kg), and a in meters per second squared (m/s²).
How much is 1 Newton?
1 Newton (N) is the force required to accelerate 1 kg of mass at 1 m/s². In everyday terms, an apple weighs approximately 1 Newton.
What is the difference between force and weight?
Weight is specifically the force of gravity acting on an object (W=mg). Force is a broader concept that includes push, pull, friction, electromagnetic force, and more.