Population Calculator

People Calculator (Future)

This is a calculator, specifically designed to calculate the growth of the human race under the conditions that you suggest. Enter your answers to each of the questions below and the program will calculate how many human beings will be on the earth at the point in the future you specify if human beings reproduce under that scenario.

According to a Google search there were estimated to be 7.674 billion people on the earth the last time that I updated this web page (Feburary 12, 2021). This program will assume that 40 percent of women/females in this starting population have still to pass through their reproductive years.

The average time between generations is generally taken to be about 20 years. What do you think will be or would want to be the average time between generations? years.
How many children do you think the average couple on earth should or will have? (You can enter a decimal number, such as 3.1.)
About what percentage of children born do you believe will survive and reproduce again? (In modern industrialized countries the infant mortality rate (the proportion of children born who die before their first birthday) is less than 1%. In poor countries it can be as high as 10% or more.) percent.
How many years into the future do you wish (dare) to look? years.