Search

Search for a symbol or emoji...

Fitness and Health Calculators

Due Date Calculator

Your information
Result

The estimated due date is Aug 13, 2026.

Estimated first day of last period: Nov 6, 2025

Typical full-term delivery window (about 37–42 weeks from LMP): Jul 23, 2026 – Aug 27, 2026

You are currently at week #23 (22 weeks 6 days, or about 5 months and 10 days) of pregnancy.

You are in the second trimester.

On average, your baby is around 10.94 inches (27.8 cm) long and weighs about 1.0 pounds (434 grams).

Your baby was likely conceived around Nov 20, 2025.

You are 57% of the way through a typical 40-week pregnancy.

Pregnancy schedule

Scroll vertically for all weeks. On wider screens the same data appears as a compact table.

Week 1First trimester

11/6/25 – 11/12/25

Week 2First trimester

11/13/25 – 11/19/25

Week 3First trimester

11/20/25 – 11/26/25

Baby conceived (approximate)
Week 4First trimester

11/27/25 – 12/3/25

Home pregnancy test often positive
Week 5First trimester

12/4/25 – 12/10/25

Week 6First trimester

12/11/25 – 12/17/25

Heartbeat detectable by ultrasound
Week 7First trimester

12/18/25 – 12/24/25

Week 8First trimester

12/25/25 – 12/31/25

Week 9First trimester

1/1/26 – 1/7/26

Week 10First trimester

1/8/26 – 1/14/26

Week 11First trimester

1/15/26 – 1/21/26

Week 12First trimester

1/22/26 – 1/28/26

Week 13Second trimester

1/29/26 – 2/4/26

Miscarriage risk decreases; end of first trimester
Week 14Second trimester

2/5/26 – 2/11/26

Week 15Second trimester

2/12/26 – 2/18/26

Week 16Second trimester

2/19/26 – 2/25/26

Week 17Second trimester

2/26/26 – 3/4/26

Week 18Second trimester

3/5/26 – 3/11/26

Week 19Second trimester

3/12/26 – 3/18/26

Baby may make noticeable movements; can hear sounds; anatomy scan may reveal sex
Week 20Second trimester

3/19/26 – 3/25/26

Week 21Second trimester

3/26/26 – 4/1/26

Week 22Second trimester

4/2/26 – 4/8/26

Week 23Second trimester

4/9/26 – 4/15/26(today)

Premature baby may survive with intensive care
Week 24Second trimester

4/16/26 – 4/22/26

Week 25Second trimester

4/23/26 – 4/29/26

Week 26Second trimester

4/30/26 – 5/6/26

Week 27Second trimester

5/7/26 – 5/13/26

Week 28Third trimester

5/14/26 – 5/20/26

Third trimester; lungs maturing toward breathing air
Week 29Third trimester

5/21/26 – 5/27/26

Week 30Third trimester

5/28/26 – 6/3/26

Week 31Third trimester

6/4/26 – 6/10/26

Week 32Third trimester

6/11/26 – 6/17/26

Week 33Third trimester

6/18/26 – 6/24/26

Week 34Third trimester

6/25/26 – 7/1/26

Week 35Third trimester

7/2/26 – 7/8/26

Week 36Third trimester

7/9/26 – 7/15/26

Week 37Third trimester

7/16/26 – 7/22/26

Week 38Third trimester

7/23/26 – 7/29/26

Week 39Third trimester

7/30/26 – 8/5/26

Full term (39–42 weeks)
Week 40Third trimester

8/6/26 – 8/12/26

Full term (40 weeks from LMP)
Week 41Third trimester

8/13/26 – 8/19/26

Week 42Third trimester

8/20/26 – 8/26/26

Only a small share of births occur exactly on the estimated due date; follow your clinician’s plan.

Note: The results of this calculator are estimations based on averages for a single pregnancy. Twin or multiple pregnancies use different timelines.

LMP-based EDD uses 280 days adjusted by cycle length vs 28 days. Conception adds 266 days. IVF uses transfer date + (266 − embryo day).

Due Date Calculator: EDD from LMP, Ultrasound, Conception, or IVF

How to use

  • Last period: enter LMP and average cycle length (22–45 days).
  • Ultrasound: enter scan date, gestational age in weeks + extra days (0–6), and cycle length for the final EDD adjustment.
  • Conception: enter one date; EDD = that date + 266 days (cycle length is ignored).
  • IVF: enter transfer date and embryo age (day 3, 5, or 6); EDD = transfer + (266 − embryo day).

What math we use

LMP rule: add 280 days with the same cycle adjustment as our pregnancy schedule tools (extra days beyond a 28-day cycle extend the pregnancy length). Ultrasound: subtract gestational age from the scan date to get implied LMP, then apply the LMP rule. Conception: add 266 days. IVF: add (266 − embryo age in days) to the transfer date.

Guide

What this calculator does

A due date calculator estimates when a baby might be born from the first day of your last menstrual period (LMP), an ultrasound that states gestational age, a known conception date, or an IVF embryo transfer date with embryo age (day 3, 5, or 6). The approach mirrors educational tools such as https://www.calculator.net/due-date-calculator.html.

Only a few percent of births happen on the exact estimated date; 37–42 weeks from LMP is the usual “term” reference band your team uses for planning.

Notes

Ultrasound dating

Early ultrasounds often refine gestational age more than LMP recall alone.

IVF precision

Transfer-based rules are usually tighter than natural conception estimates.

Limitations

  • Educational only; your clinic may use different dating rules or rounding.
  • Does not replace dating based on crown–rump length or other protocols.

FAQ

Why 266 days from conception?

That is about 38 weeks from fertilization, paired with 40 weeks gestational age from LMP (roughly two weeks earlier).