Turn nights with each parent into a custody percentage.
Weekly overnights with one parent scale to a yearly figure, then extra holiday nights are added on top. The share of the 365-night year becomes each parent's custody percentage. Custody percentages directly drive child support calculations in many places, so parties and courts need a defensible yearly numbers from the plan on paper.
Custody Time Percentage
Percent A = nights per year with A / 365; percent B = 100 - percent A
For planning estimates only; actual support and custody rules vary by jurisdiction.
Percent A = nights per year with A / 365; percent B = 100 - percent A Weekly overnights with one parent scale to a yearly figure, then extra holiday nights are added on top. The share of the 365-night year becomes each parent's custody percentage.
Custody percentages directly drive child support calculations in many places, so parties and courts need a defensible yearly numbers from the plan on paper.
This calculator takes 2 inputs: Nights per week with parent A, Extra holiday nights with A. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.