Total fertility rate (TFR) refers to the average number of live-births each female would have during her reproductive years if she were subject to the prevailing ASFRs in the population in the given year. Mathematically, it is 5 times the sum of the ASFRs by 5-yearly age groups, over the female reproductive ages for the reference period.
Illustration for computation of 2021 TFR using ASFRs
Sum of ASFRs by
5-Yearly Age Groups