Impulse to Jump Hight

Hello Ue4 Community!
I am using unreal to make make a game for my geometry class. It is a rolling game but I have reached a problem. For the game I need to know the character’s max jump height at any given time without needing the character to jump. In the Rolling character blueprint it uses spawning an impulse using a predetermined value to jump. The issue I have is that the value does not equal the max height and when scaling the size, speed, and impulse value of the character there is not a definite ratio between the value and the height. I need to figure an accurate ration or equation I can apply to the value that would calculate the jump height. Thanks to anyone who helps!