Calculators

Helps calculate aquarium volume, stocking levels, or heater/filter requirements.

Calculates total rainfall depth or rate based on measurements over time.

Estimates the weight of a fish based on its length and girth measurements.

This calculator estimates wind speed based on the angle of a windsock. It uses the Beaufort scale to provide a general description of the wind conditions.

This calculator estimates the CO₂ emissions associated with your Christmas tree, considering both real and artificial options, and suggests alternatives.

Calculates the Shannon Diversity Index (H') to quantify species diversity in a community. The index considers both the number of species and the evenness of their distribution.

Simulates the population dynamics of a predator-prey system using the Lotka-Volterra equations. This model helps visualize how the populations of predators and prey change over time based on their interactions.

Calculates the potential CO₂ concentration in a room based on the number of people, room volume, and ventilation rate.

Calculates the carrying capacity of an area based on resource availability and animal needs. Carrying capacity is the maximum number of individuals an environment can support.

Calculates the estimated daily water demand based on population size and per capita water usage.