Nights in Care Calculator
Count total nights in care from a custody or parenting schedule to work out care percentage and shared time splits, free right in your browser.
Care dates & days
Pick the period, then turn on the days of the week the child is in your care. We count those days between the two dates.
Days in your care
Results
Choose your dates and care days, then press Calculate to see the nights and care percentage.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Choose the start and end dates of the period.
- Turn each day of the week the child is in your care to “Yes”.
- Press Calculate — it counts how many of those days fall between the dates, with the care percentage of the period.
How it works
The calculator steps through every day from the start to the end date (inclusive) and counts the ones whose weekday you turned on. The care percentage is those days ÷ the total days in the range × 100, with the matching Australian care level.
Worked example
1–28 January with Monday on. There are 4 Mondays in that range, so 4 ÷ 28 days = 14.3% — regular care.
Frequently asked questions
What are the Australian care levels?
Roughly: below 14% (less than regular), 14–34% (regular care), 35–47% (shared care building), 48–52% (equal), rising to over 65% (primary). This tool labels the matching level but isn't a legal determination.
Is this legal or financial advice?
No — it's an arithmetic count over the dates you choose. Care and child-support outcomes are decided by agreement, a court or the relevant agency.
Related tools
- Care Percentage Calculator
- Parenting Nights Per Year Calculator
- Child Support Estimator (Australia)
- Custody Nights Percentage Calculator
- Pocket Money Savings Calculator
- Conception Date Calculator
Explore more in Family, Parenting & Custody.
Cite this tool
Zerdly. (2026). Nights in Care Calculator. Retrieved from https://www.zerdly.com/tools/nights-in-care-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.