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Ecology tool map

Waste & resources

Waste, composting, water, and resource use.

Choose the tool whose inputs and output match your task. Check each calculator’s assumptions and limitations before using its result.

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Waste and resource worksheets start from what you can measure — kilograms of food scraps, device counts, gallons of water, or a holiday tree choice — and multiply by factors you select and document. The composting impact calculator turns food-waste mass into avoided-emissions and compost-yield scenarios. The e-waste impact calculator scales lifecycle and recyclable-mass factors by device count, handy for cleanouts. The water demand calculator totals events, fixtures, and other measured use into daily gallons and a bill estimate. When the holidays arrive, the zero waste christmas tree calculator compares natural, artificial, and reused-material trees on the same footing. Record each factor’s source and boundary so separate runs stay comparable. See energy and emissions partners in the Ecology collection.

2 of 2 calculators

Frequently asked questions

How is each scenario calculated?
Each displayed scenario is device quantity multiplied by its entered per-device factor. For 2 devices with factors of 50 kg CO2e per device and 4 kg per device, the scenarios are 100.0 kg CO2e and 8.0 kg.
Does recyclable mass equal recovered material?
No. Recyclable mass is quantity times an entered dataset factor, not a recovery forecast.
What coefficients does the calculator provide?
None. The worksheet supplies no device, toxic-material, pollution, recycling, or lifecycle coefficient, so you should pin a dataset row and boundary before interpreting a result.

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Related comparisons

All Ecology comparisons →
Composting Impact vs E-waste Impact CalculatorCompare the two waste-scenario worksheets: food-waste mass times entered avoided-emissions and compost-yield factors versus device count times entered lifecycle and recyclable-mass factors.Evaporation Rate vs Water DemandCompare two sides of household water: how fast an open pool, pond, or tank loses water to the air, and how much water a household actually uses — and when to reach for each.Plastic Footprint vs E-waste ImpactCompare two household waste-scenario worksheets: annualized plastic mass from item frequency and measured item weight versus e-waste scenario totals from device counts and entered per-device factors.Rainwater Harvesting vs Water DemandCompare the supply side and demand side of household water: how much rain your roof can collect versus how much your household uses, so you can size a rain barrel or cistern against real need.Water Demand vs Home Energy EfficiencyCompare the water demand calculator with the home energy efficiency calculator: daily and annual household water use versus annual electricity intensity per square foot.Water Demand vs Shower Water Usage CalculatorCompare the water demand and shower water usage calculators: one totals the household's whole-day fixture use, the other isolates the shower's gallons and cost.

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