Ethical calculus would most accurately be regarded as a form of dynamic moral absolutism.
Francis Hutcheson devoted a section of his 1725 work Inquiry into the Original of our ideas and Beauty and Virtue to "an attempt to introduce a Mathematical Calculation in subjects of Morality".
Formulas included:[1] where, Another example is the felicific calculus formulated by utilitarian philosopher Jeremy Bentham for calculating the degree or amount of pleasure that a specific action is likely to cause.
[2] Bentham, an ethical hedonist, believed the moral rightness or wrongness of an action to be a function of the amount of pleasure or pain that it produced.
The felicific calculus could, in principle at least, determine the moral status of any considered act.