Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Environment
Air Quality Index Calculator
Estimate the dominant Air Quality Index (AQI) value from PM2.5, PM10, ozone, and NO2 concentrations using a simplified maximum-pollutant formula. Use it for indoor air quality monitoring or rough comparison against EPA outdoor AQI categories.
Fill in the required fields to see your result.
Environment
Recycling Impact Calculator
Estimate the CO2 emissions prevented by recycling common household materials (paper, plastic, aluminum, glass) over a chosen time period. Use it to quantify the climate benefit of curbside recycling or as a motivation tool for household waste reduction.
Fill in the required fields to see your result.
Key differences
| Air Quality Index Calculator | Recycling Impact Calculator | |
|---|---|---|
| Category | Environment | Environment |
| Inputs required | 5 | 5 |
| Result | Air Quality Index (AQI) (AQI) | CO2 Emissions Prevented (lbs CO2) |
| What it does | Estimate the dominant Air Quality Index (AQI) value from PM2.5, PM10, ozone, and NO2 concentrations using a simplified maximum-pollutant formula. Use it for indoor air quality monitoring or rough comparison against EPA outdoor AQI categories. | Estimate the CO2 emissions prevented by recycling common household materials (paper, plastic, aluminum, glass) over a chosen time period. Use it to quantify the climate benefit of curbside recycling or as a motivation tool for household waste reduction. |