Calculators

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

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.

Estimates the resources saved by adopting a vegan lifestyle compared to a standard diet.

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

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

This calculator compares the environmental impact of reading physical books versus e-books, considering factors like paper production, transportation, and device manufacturing.