Pregnancy Weight Gain Calculator
Check whether your weight gain is on track for your pre-pregnancy BMI, week by week.
Open calculator → Pregnancy
Pregnancy Week & Trimester Calculator
Find out exactly how many weeks and days pregnant you are today, which trimester that puts you in, and which scan or test comes next.
How to use it
- If you have a due date from your doctor or a scan report, choose that option — it is the most reliable input.
- Otherwise enter the first day of your last period and, if your cycles are not 28 days, adjust the cycle length.
- The "coming up next" line shows the next routine milestone in the antenatal schedule so you know what to book.
How pregnancy weeks are counted
- Pregnancy is counted from the first day of your last period — about two weeks before you actually conceived. So at four weeks pregnant, the embryo is only about two weeks old.
- Trimesters here follow the common convention: first trimester up to 13 weeks 6 days, second from 14 weeks to 27 weeks 6 days, third from 28 weeks onwards.
- Milestone windows are the usual Indian antenatal schedule and may be adjusted by your obstetrician for a high-risk pregnancy, twins or an IVF conception.
Your antenatal schedule at a glance
- Confirmation and dating scan: 6–9 weeks
- NT scan with double marker: 11 weeks to 13 weeks 6 days
- Anomaly (level 2) scan: 18–22 weeks
- Glucose tolerance test for gestational diabetes: 24–28 weeks
- Growth scan with Doppler: 32–36 weeks
- Weekly review and fetal monitoring: from 37 weeks
Frequently asked questions
Why does pregnancy start two weeks before conception?
Because the last menstrual period is a date women can actually remember, while the moment of conception usually is not. The convention has been kept worldwide so that scan charts, blood test ranges and delivery planning all line up.
When does the second trimester start?
At 14 weeks 0 days by the most common convention, running to 27 weeks 6 days. The third trimester begins at 28 weeks.
When will I feel the baby move?
Usually between 18 and 22 weeks in a first pregnancy, and sometimes as early as 16 weeks in later pregnancies. From about 28 weeks, daily movement counting is worth doing — our Kick Counter helps with that.
Which scans are essential?
The dating scan, the NT scan between 11 and 13 weeks 6 days, and the anomaly scan between 18 and 22 weeks are the three that should not be missed. Growth scans in the third trimester are added according to your risk.
Other calculators
hCG Doubling Time Calculator
Compare two beta-hCG blood results to see the doubling time and percentage rise between them.
Open calculator →Baby Kick Counter
Count your baby’s movements to ten and see how long it took — the simple daily check from 28 weeks.
Open calculator →Emergency? Call Us
24x7 emergency and labour support in Amravati.