Move your mouse over the graph to highlight the specific odds.
Knowing doesn't have to be scary. The Daily Miscarriage Probability Chart calculates the probability of miscarriage or, conversly, the probability of birth, given how far a woman is in her pregnancy. The probability chart can also account for added risk factors like maternal age, weight, the number of previous miscarriages and the number of previous live births.
The underlying model for this website was derived using meta analysis of the following peer reviewed papers on miscarriage. The model can be be used without additional input, or can be adjusted with any combination of maternal age, height/weight (BMI), number of previous miscarriages and number of previous births inputs. Each variable is modeled separately, assumed to be independent and assumed to affect the probability of miscarriage uniformly over time. These assumptions are likely overly strong, but are the most reasonable approximation in the absense of additional data.
This website is intended for informational & entertainment purposes only. This website is not intended to be considered medical advice.
Pregnant? You may enjoy our other pregnancy apps like the Miscarriage Reassurer or the Personalized Week by Week Calander. When you are a little further along in your pregnancy, be sure to check out the Labor Probability Calculator.
Into Probability Distributions? You may also be interested in our Labor Probability Chart, which charts the probability of labor over time using a left skewed normal distribution.
Wanting to become pregnant? Our Time to Conception Calculator can estimate how long it may take.