Why IVF Pregnancies Need a Different Calculator
Standard pregnancy calculators assume a natural conception cycle. IVF bypasses that entirely — your calculator should too.
LMP-Based vs IVF-Based Calculation
Traditional LMP Calculator
- Assumes ovulation on day 14 of a 28-day cycle
- Many IVF patients have irregular cycles
- Ignores the known embryo transfer date
- Cannot account for embryo age at transfer
- May estimate due date incorrectly by 1-2 weeks
- Generic pregnancy milestones, not IVF-specific
Our IVF Calculator
- Uses your exact embryo transfer date
- Accounts for embryo age (3-day or 5-day)
- Supports both Fresh and Frozen (FET) transfers
- Calculates precise gestational age from day one
- Personalized beta hCG testing schedule
- IVF-specific milestones and ultrasound timeline
Built for the IVF Community
All-in-One Tool
No more hunting across multiple sites. Fresh, frozen, 3-day, 5-day — every common IVF scenario in one intuitive calculator.
Medically Informed
Our calculation formula follows standard reproductive endocrinology practices used by fertility clinics worldwide.
Emotionally Aware
We understand the IVF journey is uniquely emotional. Our content is written with sensitivity and support in mind.
Privacy First
All calculations happen in your browser. We don't store, track, or share any personal health information.
Comprehensive Timeline
From beta hCG tests to delivery day — a complete milestone timeline personalized to your specific transfer.
Community Trusted
Designed with input from IVF patients, fertility nurses, and reproductive endocrinology best practices.
Medical Disclaimer
This calculator provides an estimated due date for informational purposes only. It is not a substitute for medical advice from your reproductive endocrinologist, OB-GYN, or fertility care team. Every pregnancy is unique, and only 5% of babies arrive on their exact estimated due date. The "due date" represents the midpoint of a normal delivery window (37-42 weeks). Always consult your healthcare provider for personalized guidance.