🤰 Pregnancy & Due Date Calculator Naegele's Rule

Calculate your due date using 3 methods: Last Menstrual Period (LMP), conception date, or IVF transfer. Track baby's growth week by week with fruit size comparisons.

100% Private (browser) 3 methods Weekly fruit size IOM guidelines 2M+ happy users
Select calculation method
Last Menstrual Period (LMP)
Most common · Naegele's rule
Conception / Ovulation Date
If you know when you conceived
IVF Transfer Date
For assisted reproduction
First day of last period

Typical cycle: 28 days

Maternal details (optional)
Pre-pregnancy weight (kg)
Height (cm)
Multiple pregnancy?
Your Pregnancy Timeline
October 22, 2024
Estimated due date
Due window: Oct 18 - Oct 27
24 weeks pregnant
2nd Trimester
🍈
Honeydew melon
~30 cm, 600g
🌸 Conception ⚡ Quickening 👶 Full term

Recommended weight gain

Normal weight (BMI 18.5-24.9)
Total gain: 11.5 - 16 kg
By now (week 24): 6.8 - 9.2 kg
Heartbeat detectable
Week 10-12
Anatomy scan
Week 18-22
⚕️ This calculator provides estimates based on standard obstetric guidelines (Naegele's rule, IOM). Always consult your healthcare provider for personalized medical advice.

❓ Frequently Asked Questions

Everything you need to know about due dates and pregnancy tracking.

📅 How is due date calculated?

Most commonly using Naegele's rule: LMP + 280 days (40 weeks). For IVF, we add 266 days minus embryo age.

🍎 Why compare baby to fruit?

It's a fun, visual way to track growth. For example, at week 12 baby is a lime, at week 24 a honeydew.

📊 How accurate is due date?

Only 4% of babies arrive exactly on due date. We show a 5-day window (±5 days) for 90% confidence.

👶 What if I have twins?

Multiples often arrive earlier. Select "twins" above and we adjust due date and weight gain recommendations.