Calculators

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

Calculate your estimated annual plastic consumption based on your daily habits and usage.

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

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.

This calculator compares the environmental impact of driving a car versus biking. It estimates the number of trees saved by choosing to bike instead of drive for a certain amount of time.

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