The magnitude of a force is a scalar quantity that represents the strength or size of the force, typically measured in units such as Newtons (N) in the International System of Units (SI). It can be determined using the formula:
\[ F = m \cdot a \]
where \( F \) is the force, \( m \) is the mass of the object, and \( a \) is the acceleration. The magnitude does not include direction; it only indicates how strong the force is.