Calculate doubling time from a growth rate.
Doubling time for Population Doubling shows how many periods it takes for a quantity to double at a fixed growth rate, which grows dramatically faster than it sounds. Exponential growth reaches large numbers quickly, so doubling time is the most intuitive way to grasp the pace.
Population Doubling
Doubling time = 69.3 / rate%
Doubling time = 69.3 / rate% Doubling time for Population Doubling shows how many periods it takes for a quantity to double at a fixed growth rate, which grows dramatically faster than it sounds.
Exponential growth reaches large numbers quickly, so doubling time is the most intuitive way to grasp the pace.
This calculator takes 3 inputs: Growth rate, Current population, Number of periods. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.