15 FREE TOOLS

Environment & Utility calculators

Estimate energy costs, water use and emissions from consumption records and clearly stated factors.

Carbon Footprint Calculator

Estimate annual carbon emissions from electricity, petrol and other monthly sources.

Estimate a household's annual emissions using energy consumption and entered factors.

Compare petrol and EV operating emissions using your grid and fuel factors.

Estimate annual solar generation and the electricity savings it could provide.

Compare rooftop solar installation costs with projected annual net savings.

Estimate how many years solar savings could take to recover installation costs.

Find your average electricity cost per unit, including fixed bill charges.

Estimate an appliance's energy use and running cost over a chosen period.

Estimate AC electricity spending from rated power, hours and average load.

Calculate a fan's electricity use from wattage and operating hours.

Estimate geyser running costs using power, usage time and duty factor.

Estimate refrigerator electricity costs with an average cycling-load allowance.

Estimate water consumption from household size and daily use per person.

Estimate collectable rainwater from roof area, rainfall and collection efficiency.

Estimate annual plastic weight from weekly item use and item weights.