[File:Countriesbyfertilityrate.svg|thumb|550px|A world map showing countries by total fertility rate (TFR), according to the
CIA World Factbook's 2015 data. ]] The
total fertility rate (
TFR), sometimes also called the
fertility rate,
period total fertility rate (
PTFR) or
total period fertility rate (
TPFR) of a population is the average number of children that would be born to a woman over her lifetime if:
- She were to experience the exact current age-specific fertility rates (ASFRs) through her lifetime, and
- She were to survive from birth through the end of her reproductive life.
It is obtained by summing the single-year age-specific rates at a given time.