Office of Recovery Services Child Support Calculator. The following worksheets are intended only as a guideline for estimating child support.You can calculate your possible child support payment amount two ways: online, using our Child Support Calculator, or on paper, using worksheets. Child support is calculated using the gross monthly income of both parents and the number of overnights the child spends in each household. Alimony, sometimes referred to as spousal support, is the court-ordered money that one party pays to the other party for support while they are separated. See how parenting time affects the total. Our tool will calculate how much spousal support a judge may order. Complete the fields to calculate and estimate. There are numerous factors involved in the Utah alimony calculator. The following Utah child support obligation calculators can give you some guidance on "how much I have to pay for child support".