Mythras SIZ is not linear when compared to many other stats. For example normal human is 2d6+6 on the SIZ and that is between 59-70 kg in weight. Normal Kaiju in Monster Island is SIZ 70 and that weights between 10,8 and 11,7 tons.
Here is a first attempt at making it easier at the table to describe visually the size of the creatures
First a short table

Then a longer table comparing the SIZ against human, horse, Tyrannosaurus rex, elephant, Kaiju in Monster Island and your average blue whale

The entire table is available in excel format here
So helpful! Thank you for this!
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