A HELPING HAND WITH DATES AND NUMBERS
Let us help you work it out.
Choose what you would like to understand and enter the details you know. ParentAura will calculate a helpful estimate based on the information you share.
- ✓Quick to use
- ✓Easy to understand
- ✓Free whenever you need it
Choose the calculator that answers your question.
Period Calculator
When might your next period begin?
Share the first day of your latest period, how long it usually lasts and your usual cycle length. ParentAura will estimate when your next period may begin and mark the expected dates clearly.
YOUR ESTIMATE
4–8 October Expected period dates- Last period date
- 6 September 2026
- Cycle length
- 28 days
- Period length
- 5 days
Ovulation Calculator
Which days may be your most fertile?
Share the first day of your latest period and your usual cycle length. ParentAura will estimate your fertile window and likely ovulation day in one simple view.
YOUR ESTIMATE
20 September Likely ovulation- Fertile window
- 15–21 September
- Cycle length
- 28 days
Fertile window Likely ovulation
Pregnancy Due Date Calculator
When may your baby be due?
Enter the first day of your latest period or a known conception date. ParentAura will estimate your due date and place it on a simple pregnancy timeline.
YOUR ESTIMATE
17 May 2027 Estimated due date- Pregnancy stage
- 4 weeks, 1 day
- Based on
- Last period date
Last periodTodayDue date
Pregnancy Weeks to Months
How many months pregnant is that?
Enter the pregnancy weeks and additional days you have been given. ParentAura will translate them into an approximate month and trimester that feels easier to follow.
YOUR ESTIMATE
18 weeks, 3 days Your pregnancy stage- Approximate month
- Month 5
- Trimester
- Second
Week 118 weeks + 3 daysWeek 40
Travel Planner
Could my period overlap with my trip?
Add your recent period dates and planned travel dates. ParentAura will show whether your period may overlap with your holiday, work trip or important event.
YOUR ESTIMATE
Possible overlap Your travel check- Planned travel
- 2–8 October
- Estimated period
- 5–9 October
2 Oct5 Oct8 Oct9 Oct
Beta-hCG Calculator
How did two beta-hCG results change?
Enter two beta-hCG values with the date and time of each test. ParentAura will calculate the mathematical change and estimated doubling time between them.
YOUR ESTIMATE
2.4 days Estimated doubling time- First result
- 120 mIU/mL
- Second result
- 216 mIU/mL
- Change in 48 hours
- +80%
120
First164
24 hours216
48 hours