hCG Calculator and hCG Levels Chart Tool

  • early pregnancy hcg and hormone levels
Total hCG Difference:2 mlU/ml
hCG Doubling Every:72 hours
2-Day Increase:72 hours

Our hCG Pregnancy Hormone Calculator and hCG rise tool will check whether your hCG levels in pregnancy rise normally by using this hCG Calculator. 


In most normal pregnancies at an hCG levels below 1,200 mIU/ml the hCG usually doubles every 48-72 hours. At levels below 6,000 mIU/ml the hCG levels normally increase by at least 60% every 2-3 days. More recently,  Seebert et al reported in 2006 that a rise of at least 35% over 48 hours was proposed as the minimal rise consistent with a viable IUP. So it would be wrong to always assume the presence of  a nonviable pregnancy even if the there is an hCG rise below 50% over 48 hours. 

Your exact hCG levels depends on your gestational age and the due date calculator which you can calculate here.

Slow hCG rise

Slower than expected hCG increases are more consistent with abnormal pregnancies such as miscarriages and ectopic pregnancies, and decreases are usually associated with failed pregnancies such as miscarriages or chemical pregnancies. Read more about slow rising hCG levels HERE

In many early pregnancies, the hCG level will double every 31 to 72 hours. As the pregnancy progresses, hCG levels rise and the doubling time increases.

In general, after 6-7 weeks of the pregnancy the best indication of a healthy pregnancy is a good fetal heartbeat. Blood hCG levels are not very helpful to test for the viability of the pregnancy if the hCG level is well over 6,000 and/or after 6-7 weeks of the pregnancy. Instead, to test the health of the pregnancy at that time, a sonogram should be done to confirm the presence of a fetal heart beat. Once a fetal heart beat is seen, it is not recommended to check the pregnancy viability with hCG levels anymore. 


Under 1,200 mIU/ml Between 30 and 72 Hours
1200-6000 mIU/ml Between 72 and 96 Hours
Over 6,000 mIU/ml Over 96 Hours

hCG levels rise during the first 6 to 10 weeks of pregnancy then decline slowly during the second and third trimesters.

As your pregnancy develops, the increase slows down significantly. Between 1,200 and 6,000 mIU/ml serum, the hCG usually takes about 72-96 hours to double, and above 6,000 mIU/ml, the hCG often takes over four or more days to double. It makes little sense to follow the hCG values above 6,000 mIU/ml as at this point the increase is normally slower and not related to how well the pregnancy is doing.

After two to three months the increase will slow even further and eventually hCG levels even decline before reaching a plateau for the duration of the pregnancy. Doctors will often use the quantitative blood test if they are closely monitoring the development of a pregnancy but above a level of about 6,000 mIU/ml that makes no sense because at this point a sonogram provides better information about the pregnancy.

One single hCG value does not tell you much about the viability of the pregnancy and there is a wide range of normal hCG levels in pregnancy. A normal hCG rise over several days prior to 6 weeks of the pregnancy usually indicates a viable pregnancy. In general, the best indication of a healthy pregnancy other than a normal rise of hCG is a good fetal heartbeat after 6-7 weeks.