Parenting Time Calculator

Parenting time, also called timesharing or possession, is the schedule that sets when a child is with each parent. Most courts measure it in overnights, the number of nights per year the child sleeps at each parent's home.

To calculate parenting time percentage, count each parent's overnights across a full year and divide by 365. About 182-183 overnights each is roughly 50/50; 146 is about 40%; 104 is about 28%; 73 is about 20%.

In most states the number of overnights can change the child support amount, though the threshold and formula vary by state. Use the free Parenting Time Calculator to count overnights, including holiday rotations, then run a child support estimate for your state.

Frequently asked questions

What is a parenting time calculator?

A parenting time calculator counts how many overnights and how much total time a child spends with each parent under a given schedule, and turns that into a clear percentage and overnight count.

How do I calculate parenting time percentage?

Count each parent's overnights across a full year (365 nights) and divide by 365. For example, 146 overnights is about 40% parenting time. Holidays and breaks shift the rotation, so a tool helps avoid miscounting.

Does parenting time affect child support?

In most states, yes. Many child support guidelines adjust the amount based on overnights. The exact threshold and formula vary by state. Florida, for example, applies a different calculation once a parent reaches 73 overnights per year.

What is the difference between parenting time and custody?

Parenting time (timesharing) is the schedule of when the child is with each parent. Custody, in the decision-making sense, is about authority over major choices like school and medical care.

Is the parenting time calculator free?

Yes. You can build a schedule, count overnights, see the parenting time percentage, compare schedules, and export a clean calendar for mediation or court, for free.