Convert your custody schedule into overnight counts and parenting time percentages — the numbers many states' child support formulas depend on.
Most states count overnights, not hours, when parenting time affects child support. Common thresholds: several states adjust support once the non-primary parent crosses roughly 20-30% of overnights (73-110 nights/year); Alaska applies a shared-custody formula at 30%; many income-shares states use a parenting time credit that phases in continuously.
Schedule presets here use standard-year approximations (e.g., every-other-weekend is about 52 overnights, a 2-2-3 rotation is about 182). Holiday and vacation time can shift these by 10-20 nights — count your actual calendar for anything close to a legal threshold.
A basic Friday-to-Sunday alternating weekend is about 52 overnights per year, or roughly 14% of parenting time. Adding one midweek overnight per week brings it to about 26%.
Week on/week off and 2-2-3 rotations both produce approximately 182-183 overnights each per year. Courts treat anything close to equal as 50-50 for support purposes in most states.
This is an educational estimate, not legal advice and not a prediction of any court order. Judges may deviate from guidelines. Verify results with the official state calculator above and consult a family law attorney for your situation.