The Fertility Ratio Calculator helps you find the basic measure of fertility in a population by comparing the number of live births to the number of women of childbearing age. It is useful for getting a quick sense of birth patterns and for comparing different regions or years. This ratio is simpler than the Total Fertility Rate and gives a snapshot instead of a lifetime estimate.
formula of Fertility Ratio Calculator
Basic Formula:
Fertility Ratio = (Number of Births) / (Number of Women Ages 15–49)
To show as births per 1,000 women:
Fertility Ratio = (Number of Births / Number of Women Ages 15–49) × 1000
Where:
- Number of Births: All live births in the time frame (usually one year).
- Number of Women Ages 15–49: The total number of women considered to be of reproductive age.
This ratio answers: How many births happen per woman of reproductive age?
Common Reference Table
| Term | What It Means | Typical Range |
|---|---|---|
| Fertility Ratio | Births per woman of childbearing age | ~50–200 births per 1,000 women |
| Total Fertility Rate (TFR) | Average children per woman over lifetime | ~1.5–7.0 |
| General Fertility Rate (GFR) | Births per 1,000 women ages 15–49 | Similar to Fertility Ratio |
Example of Fertility Ratio Calculator
Sample Calculation:
- Number of Births in the year: 2,000
- Number of Women ages 15–49: 12,500
Fertility Ratio = (2,000 / 12,500) × 1000
Fertility Ratio = 0.16 × 1000 = 160 births per 1,000 women
This means that for every 1,000 women of childbearing age, there were about 160 births during that year.
Most Common FAQs
A: The Fertility Ratio is a simple snapshot for one year. The TFR estimates how many children a woman would have if current birth rates stayed the same for her whole life.
A: Yes! It helps health planners, local governments, and researchers monitor birth trends quickly without needing complex age-specific data.
A: Yes. It can change due to factors like economic shifts, health services, cultural trends, and policies affecting family planning.