hCG Calculator - Track Your Doubling Time and Growth

Calculate your hCG difference, the doubling time, 1-day increase and 2-day increase with our hCG calculator.

hCG Level Test Date Time (optional)
mIU/mL
mIU/mL

Enter your ovulation, IUI, or embryo transfer date to see how your levels compare to DPO reference ranges.

or see example results

⏱️ Normal hCG Doubling Times

hCG Level Typical Doubling Time Minimum 48h Rise
Below 1,200 mIU/mL 30-72 hours 49%
1,200-6,000 mIU/mL 72-96 hours 40%
Above 6,000 mIU/mL 96-144 hours 33%

📅 hCG Levels by Week of Pregnancy

Weeks from LMP Low (mIU/mL) High (mIU/mL)
3 5 50
4 4 426
5 19 7,340
6 1,080 56,500
7-8 7,650 229,000
9-12 25,700 288,000
13-16 13,300 254,000
17-24 4,060 165,400
25-40 3,640 117,000

This calculator is for informational purposes only and is not a substitute for professional medical advice. hCG levels vary widely between healthy pregnancies. Always discuss your results with your healthcare provider. See our full disclaimer.