Recycling Impact Calculator
Estimate the CO₂, energy, and water saved by recycling aluminum, plastic, paper, glass, and steel, based on EPA and industry figures. Runs in your browser.
Amount recycled (kg per material)
Estimated savings
- CO₂ emissions avoided
- 28.2 kg
- Energy saved
- 68.6 kWh
- Water saved
- 223 L
Per-kilogram savings (vs. producing from virgin materials) are approximate, compiled from US EPA WARM and industry recycling data. Actual figures vary by facility, region, and process — treat these as order-of-magnitude estimates.
About this tool
Recycling avoids the heavy resource cost of making materials from scratch, and this calculator estimates how much you save across three measures — carbon dioxide emissions, energy, and water — for the common household streams: aluminum, PET plastic, paper and cardboard, glass, and steel. Enter how many kilograms of each you recycle and it multiplies by approximate per-kilogram savings versus virgin production, compiled from the US EPA's WARM model and industry data. Aluminum is the standout: recycling it saves roughly 95% of the energy needed to make new aluminum from ore, which is why it dominates the energy and carbon totals. The figures are genuine order-of-magnitude estimates, not precise accounting — real savings depend on the specific facility, region, energy grid, and process, and transport and contamination reduce the net benefit. Use it to understand the relative impact of recycling different materials and to motivate diverting more from landfill. Everything runs in your browser.
How to use it
- Enter the kilograms you recycle for each material.
- Read the estimated CO₂, energy, and water saved.
- Notice how much more aluminum saves per kg than glass.
- Treat the totals as approximate estimates, not exact figures.
Frequently asked questions
- Why does aluminum save so much more than glass?
- Smelting aluminum from bauxite ore is extraordinarily energy-intensive, so recycling it saves about 95% of that energy — far more per kilogram than glass, which is cheaper to make from sand. That is why aluminum dominates the energy and carbon savings in the totals.
- Where do these numbers come from?
- Approximate per-kilogram savings compiled from the US EPA WARM (Waste Reduction Model) and industry recycling data, comparing recycled production to virgin production. They are estimates; the tool labels them as order-of-magnitude figures.
- How accurate are the water-saving figures?
- Water savings are the most variable of the three and depend heavily on the specific process and region, so treat them as the roughest estimate. The CO₂ and energy figures are better characterized but still vary by energy grid and facility.
- Does recycling always have a net benefit?
- Usually yes for these materials, but transport, sorting, contamination, and the local energy mix all reduce the net gain, and heavily contaminated loads can end up landfilled anyway. Clean, well-sorted recycling delivers the savings shown here; contaminated recycling delivers less.
- Should I reduce and reuse before recycling?
- Yes — the waste hierarchy puts reduce and reuse above recycling because not producing or re-using an item saves more than recycling it. Recycling is the best option for materials you cannot avoid or reuse.
- Is anything uploaded?
- No. The calculation runs entirely in your browser with no network request.