The following calculator provides an estimate of a potential alimony award in the State of Ohio. Ohio does not use a specific mathematical formula to calculate alimony.However, this calculator offers an estimate of a potential alimony award in Ohio. Learn how Ohio judges decide whether to award spousal support, how much payments will be, how long they'll last, and when alimony can change or end. Get precise alimony estimates with our Ohio Alimony Calculator. Alimony calculations in Ohio (OH) involve specific laws and various factors that influence the final determination. Understanding both state-specific. No formula under Ohio law specifies how spousal support is calculated. (However, some courts offer guidelines that will at least get you in a ballpark.) Figuring out the numbers during your divorce can add a lot of stress to an already stressful time.