Pregnancy Calculator
Our pregnancy calculator will help you determine your due date.
Keep in mind that this calculator is based on a 28-day menstrual cycle, and may need to be adjusted for women whose cycle differ from 28 days.
Your due date is estimated by adding 40 weeks to the first day of your last menstrual period. Only 5% of women deliver on their projected due date, so this date should be used as an estimate, not an exact calculation.
The Pregnancy Calculator can estimate a pregnancy schedule based on the provided due date. Usually based on a sonogram, an estimated due date is typically obtained from a healthcare provider during a prenatal visit. It is also possible to estimate the due date based on the biological cycle using the Due Date Calculator. You can calculate the Pregnancy by using Multiple Criteria.
Pregnancy Calculator Features
This calculator may be used to calculate the best date range to book a Nuchal Translucency Scan and Morphology Scan :
- NT scan may be performed between 11wks–13wks 6 days (CRL 45-84mm) however as individual babies grow slightly differently and to visualize the foetal bladder and heart the very best range is 12wks 3days to 13wks 3day
- Morphology scan is best booked after 19wks but before 22wks.
User Guideline
To use the calculator simply select one of the following
1. LMP
2. When ovulation & conception occurred
3. Age of foetus today
4. EDD
OR you may, in the bottom drop box of the calculator, enter the date of a previous ultrasound and foetal age at that scan if the patients EDD was not reported. The dates at which you should book your scans will automatically be displayed.You can also find out how many weeks pregnant a patient will be on a particular date by selecting a date between the patients LMP and EDD in the second last drop down box after you have performed the initial calculations.Should you enter a date incorrectly or have a new calculation REFRESHING the web page will clear previous calculations.
Pregnancy Calculator report
Each Pregnancy Calculator report contains the following information:
1. Estimated Due date
2. Probable date of conception (about two weeks after the last menstrual period)
3. Foetal Age at Today
4. Best date range for NT scan(12 wks 3 days to 13 wks 3 days)
5. 19 Weeks / Morphology Scan Date
6. Estimated Due Date (40 Weeks)
7. Approximate Pregnancy days in weeks
8. Previous Ultrasound Date and Foetal Age On That Day
Disclaimer:
The information provide by this calculator is not a diagnosis. The calculations that are provided are an estimate based on averages and that the EDD provided by the patients’ health care provider is the best date to use. This site is not responsible for incorrect usage of this calculator or incorrect booking times based on information provided by this calculator.
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This scan will help to confirm your baby’s expected delivery date
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Screening for Down syndrome and other chromosomal anomalies.
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Screening for Down syndrome and a review of baby’s development
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Detects 90% of pregnant women who will develop pre-eclampsia
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Scan to review baby’s development
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Detailed review of your baby’s complex organs
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Checks your baby’s health, position, size and growth
On , you are currently weeks days pregnant.
Frequently Asked Questions:
How is the due date estimated using the Pregnancy Calculator?
The due date is estimated by adding 40 weeks to the first day of your last menstrual period. However, this is based on a 28-day menstrual cycle and may need adjustment for women with different cycle lengths.
What are the best date ranges for booking a Nuchal Translucency (NT) Scan and Morphology Scan?
The NT scan is best performed between 12 weeks 3 days to 13 weeks 3 days, while the Morphology scan should be booked after 19 weeks but before 22 weeks.
What information does the Pregnancy Calculator report provide?
The report includes the Estimated Due Date, Probable Date of Conception, Foetal Age at Today, Best Date Range for NT Scan, 19 Weeks/Morphology Scan Date, Estimated Due Date (40 Weeks), Approximate Pregnancy Days in Weeks, and Previous Ultrasound Date and Foetal Age on That Day.
How can I use the Pregnancy Calculator?
You can use the calculator by selecting one of the following options: LMP (Last Menstrual Period), when ovulation & conception occurred, age of the foetus today, or EDD (Estimated Due Date). You can also enter the date of a previous ultrasound and foetal age at that scan if the EDD was not reported.
Is the due date provided by the Pregnancy Calculator exact?
No, the due date is an estimate. Only 5% of women deliver on their projected due date. The EDD provided by a healthcare provider is the best date to use.
