Calculator directory
Ecology calculators
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Ecology35
AI Water Footprint CalculatorUse this free AI Water Footprint Calculator to estimate water consumption associated with AI usage using an adjustable per-prompt assumption.Bag Footprint CalculatorUse this free Bag Footprint Calculator to estimate the carbon footprint of shopping bags using a chosen lifecycle emission factor.Books vs e-Books CalculatorUse this free Books vs e-Books Calculator to compare printed-book emissions with an allocated share of an e-reader or tablet footprint.Car vs Bike CalculatorUse this free Car vs Bike Calculator to estimate emissions avoided when travel is shifted from a car to a bicycle.Carrying Capacity CalculatorUse this free Carrying Capacity Calculator to estimate resource-based carrying capacity as sustainable availability divided by individual demand.Christmas Tree Footprint CalculatorUse this free Christmas Tree Footprint Calculator to estimate the footprint of natural or artificial Christmas trees from a lifecycle emission factor.Cigarette Butts Cleanup CalculatorUse this free Cigarette Butts Cleanup Calculator to estimate the labour and disposal cost of cleaning up discarded cigarette butts.CO2 Breathing Emission CalculatorUse this free CO2 Breathing Emission Calculator to estimate the mass of carbon dioxide exhaled by people over time.COVID-19 Waste CalculatorUse this free COVID-19 Waste Calculator to estimate disposable mask, glove, or other protective-item waste over a selected period.Cryptocurrency Footprint CalculatorUse this free Cryptocurrency Footprint Calculator to estimate transaction-related cryptocurrency emissions from energy intensity and electricity carbon intensity.Drip Faucet CalculatorUse this free Drip Faucet Calculator to estimate water wasted by a dripping faucet over a chosen number of days.Fish Mercury CalculatorUse this free Fish Mercury Calculator to estimate mercury intake from fish concentration, serving size, and servings.Flight Carbon Footprint CalculatorUse this free Flight Carbon Footprint Calculator to estimate flight emissions using distance, passengers, and a selectable passenger-kilometre factor.Global Plastic Policy CalculatorUse this free Global Plastic Policy Calculator to estimate the plastic reduction implied by a policy target and baseline quantity.Hand Drying Footprint CalculatorUse this free Hand Drying Footprint Calculator to estimate electric hand-dryer emissions from power, operating time, usage, and grid intensity.Hydroelectric Power CalculatorUse this free Hydroelectric Power Calculator to estimate hydroelectric output from water flow, net head, gravity, and system efficiency.Kaya Identity CalculatorUse this free Kaya Identity Calculator to apply the Kaya identity to decompose energy-related carbon emissions into four drivers.Lotka-Volterra CalculatorUse this free Lotka-Volterra Calculator to calculate the prey derivative in the classic Lotka–Volterra predator–prey model.Meat Footprint CalculatorUse this free Meat Footprint Calculator to estimate meat-related greenhouse gas emissions using an adjustable lifecycle factor.Olympic Games Sustainability CalculatorUse this free Olympic Games Sustainability Calculator to estimate emissions avoided when a major sporting event meets a reduction target.Passive House Savings CalculatorUse this free Passive House Savings Calculator to estimate annual energy-cost savings from lower energy intensity in a passive building.Plastic Footprint CalculatorUse this free Plastic Footprint Calculator to convert the number of plastic items used into an estimated plastic mass.Plug-in Hybrid Economy CalculatorUse this free Plug-in Hybrid Economy Calculator to estimate plug-in hybrid trip cost by separating electric and fuel-powered distance.Reduce Your Plastic CalculatorUse this free Reduce Your Plastic Calculator to estimate how much plastic can be avoided by applying a reduction target to baseline use.Shannon Diversity Index CalculatorUse this free Shannon Diversity Index Calculator to calculate Shannon diversity from the abundance of four species using natural logarithms.Smog CalculatorUse this free Smog Calculator to create a simple relative smog-potential indicator from precursor emissions and atmospheric multipliers.Solar Panel CalculatorUse this free Solar Panel Calculator to estimate daily solar generation from array capacity, peak sun hours, and a performance ratio.Solar Panel Wattage CalculatorUse this free Solar Panel Wattage Calculator to estimate solar-panel output under a selected irradiance and conversion efficiency.Tap Water CalculatorUse this free Tap Water Calculator to estimate the cost difference between bottled water and tap water.Tire Benefits CalculatorUse this free Tire Benefits Calculator to estimate environmental benefits from tire reuse or retreading using an adjustable per-tire factor.Tree Benefits CalculatorUse this free Tree Benefits Calculator to estimate cumulative tree carbon uptake from tree count, annual uptake, and years.Vegan Footprint CalculatorUse this free Vegan Footprint Calculator to compare estimated daily dietary emissions over time using adjustable diet-footprint assumptions.Water Demand CalculatorUse this free Water Demand Calculator to estimate community water demand from population, per-capita daily use, and time.Wind Turbine CalculatorUse this free Wind Turbine Calculator to estimate wind-turbine power using air density, swept area, wind speed, and power coefficient.Wind Turbine Profit CalculatorUse this free Wind Turbine Profit Calculator to estimate annual wind-turbine operating profit from energy value and annual operating cost.