A weight detecting device for microwave ovens is used to detect a weight of food
placed on an exterior casing to minimize a space to install a weight sensor and
to prevent heat from being transmitted from an interior casing through a top plate
of the interior casing to the weight sensor. The weight detecting device includes
a weight detecting unit and a support unit. The weight detecting unit is supported
at an end thereof, and detects a weight according to a force applied to a free
end thereof. The support unit supports the weight detecting unit at a position
spaced apart from a top plate of an interior casing of a microwave oven.