Population Growth Calculator

Model exponential and logistic population growth, explore world population data, and understand age-sex pyramids.

📈 Exponential Growth

P(t) = P₀ × e^rt
Unbounded growth — population grows proportionally to its size

—
Final Population P(t)

—

Population Added

—

% Change

—

Doubling Time T₂

—

Rule of 70 (approx T₂)

—

Pop. at 100 years

📊 Logistic Growth

P(t) = K / (1 + ((K−P₀)/P₀) × e^−rt)
S-curve growth approaching carrying capacity K

Carrying Capacity K

—
Final Population P(t)

—

Population Added

—

% Change

—

% of Carrying Capacity

—

Remaining until K

—

Pop. at 100 years

Population pyramids show the age and sex distribution of a population. The shape reveals birth rates, death rates, and stage of demographic transition.

Population Growth Chart (0 – 50 years)