HCG Calculator

Enter your hCG levels to determine your hCG doubling time

HCG Calculator
First hCG Level mIU/mL
Second hCG Level mIU/ml
Days Between Tests days

Your hcg is doubling every



Your hcg is doubling every


HCG level Doubling time
< 1200 48 – 72 hours
1200 to 6000 72 – 96 hours
> 6000 > 96 hours
HCG levels during pregnancy

(in weeks since last menstrual period)

3 weeks 5 – 50 mIU/ml
4 weeks 5 – 426 mIU/ml
5 weeks 18 – 7,340 mIU/ml
6 weeks 1,080 – 56,500 mIU/ml
7 – 8 weeks 7,650 – 229,000 mIU/ml
9 – 12 weeks 25,700 – 288,000 mIU/ml
13 – 16 weeks 13,300 – 254,000 mIU/ml
17 – 24 weeks 4,060 – 165,400 mIU/ml
25 – 40 weeks 3,640 – 117,000 mIU/ml
non-pregnant 55 – 200 ng/ml

The Human Chorionic Gonadotropin or hCG is a hormone that is produced in pregnant women. Doctors use hCG levels to determine pregnancy and the stage of pregnancy. HCG levels increase as the pregnancy proceeds. The hCG level doubling time is used to assess the progress of the pregnancy.

Normally hCG level is measured through blood tests. Serial hCG tests are two blood tests done one after the other, 2 or 3 days apart within which the hCG level is expected to double. This is called the hCG doubling time. Using this information you can determine the ideal hCG levels that you are required to have at different stages of your pregnancy.

How to Use hCG Calculator?

Step1: Enter the first hcg level in the first box in the calculator

Step 2: Enter the second hCG level in the second box in the calculator

Step 3: Enter the days between the two tests

Step 4: Hit the calculate button

Results: You get to see your hCG doubling time in hours and days as well. The normal ranges at various stages of pregnancy are provided in the chart above. Correlate the results with them to get a fair idea of what your hCG numbers spell.