The following calculator provides an estimate of a potential alimony award in the State of 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.Ohio does not use a specific mathematical formula to calculate alimony. However, this calculator offers an estimate of a potential alimony award in Ohio. The calculator below can provide you with an estimate as to how a court may handle alimony. Get an estimate for alimony payments and duration. Get an idea on how much money a month you can expect to pay, and for how you can expect to pay it. The Ohio Alimony Calculator is designed to offer estimations based on various input factors, such as income, length of marriage, and specific circumstances. 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.)