How much weight do I need to dive?

There is no chart that knows you — ballast depends on your body, suit thickness, cylinder, and salt versus fresh water. The method is what transfers: a surface buoyancy check (float at eye level, empty BCD, normal breath) done at the start of every gear change, then logged. Rules of thumb like 10% of body weight in a 7 mm are starting guesses only. Your instructor’s weighting procedure governs.