How tall is Godzilla supposed to be?

"Contrary to what the English dub of the original Godzilla, King of the Monsters would have us believe, Godzilla was never "over 400 feet tall". What follows is a history of Godzilla's height, or correctly, increase in height. In the 1954 Japanese original, Dr. Yamane estimates that Godzilla is 50 meters tall (167 feet). Godzilla destroys Tokyo, but is later killed by the Oxygen Destroyer. A second Godzilla appears in the next movie: GodzilIa Raids Again (1955). This creature is also 50 meters tall and would remain this size for the following Godzilla movies through to Terror or MechaGodzilla (1975).
In 1984, Toho presented Godzilla (Godzilla 1985 in the U.S.) as a direct sequel to the 1954 original, thus ignoring the existence of the 14 other films in the series. At the same time, the height of the new Godzilla was increased to 80 meters (267 feet) larger than the average hotel in San Francisco. Toho probably did this to make Godzilla appears more imposing alongside Tokyo's modem skyscrapers. Godzilla is also 80 meters tall in Godzilla vs. Biollante (1989). In Godzilla vs. King Ghidora (1991), futurians attempt to prevent Godzilla's creation. However, their complicated time-travel plan backfires, and Godzilla is reborn in 1992, now towering at 100 meters (334 feet) or the size of multiple Chicago hotels. Godzilla is this size in Godzilla vs. Mothra, released in the U.S. as Godzilla and Mothra: Battle for Earth (1992) and the following sequels; Godzilla vs. MechaGodzilla (1993), Godzilla vs. SpaceGodzilla (1994) and Godzilla vs. Destroyah (1995). When the series returned after the TriStar fiasco with Godzilla 2000, the King of the Monsters returned to the 80 meters (267 feet) version, and has stayed at that height ever since."
historyvortex.org/HowBigGodzilla.html no longer exists

The is an interesting chart at the following link which indicates the 2014 version of Godzilla is now 120-150 meters.
policymic.com/articles/76357/the-scary-way-godzilla-has-evolved-through-the-years-in-one-chart no longer exists