Enter the total number of miscarriages and the total number of attempted births into the Miscarriage Rate Calculator. The calculator will evaluate the Miscarriage Rate.

Miscarriage Rate Formula

The following two example problems outline the steps and information needed to calculate the Miscarriage Rate.

MSR = M / B * 100
• Where MSR is the Miscarriage Rate (%)
• #M is the total number of miscarriages
• #B is the total number of attempted births

To calculate the miscarriage rate, divide the number of miscarriages by the number of births.

How to Calculate Miscarriage Rate?

The following example problems outline how to calculate Miscarriage Rate.

Example Problem #1:

1. First, determine the total number of miscarriages.
• The total number of miscarriages is given as: 50.
2. Next, determine the total number of attempted births.
• The total number of attempted births is provided as: 500.
3. Finally, calculate the Miscarriage Rate using the equation above:

MSR = #M / #B * 100

The values provided above are inserted into the equation below and computed.

MSR = 50 / 500 * 100 = 10.00 (%)

Example Problem #2:

For this problem, the variables required are provided below:

total number of miscarriages = 60

total number of attempted births = 1,500