Gravitational Field Strength

Weight is the force of gravity acting on an object and is calculated using the formula:

$W = m \times g$

where:

$W$ = weight (in Newtons, N)
$m$ = mass (in kilograms, kg)
$g$ = acceleration due to gravity (≈ 9.8 m/s²) or gravitational field strength (≈ 9.8 N/kg)

Definition of $g$ :
The force experienced by a mass due to gravitational attraction.
SI unit: N/kg or m/s².

Important Reminder
Mass does not change — it is the gravitational force that may change depending on location.