File:S2 Ink Saver Sub Chart.png

Summary
The calculation method is from Splatoon 2 Abilities by Lean. Ability parameters were found here.

A = ability points = 10×Mains+3×Subs

B = (3.3A-0.027A^2)/100

B cannot exceed 1.0.

See the information in the table below to determine which step C to use.

Type A: C = 1+(0.8-1)×B

Type B: C = 1+(0.7-1)×B

Type C: C = 1+(0.65-1)×B

Type D: C = 1+(0.6-1)×B

D = ink consumption = [base consumption]×C