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.
Climate
Carbon Footprint Calculator
Estimate annual personal CO₂ emissions from home electricity, natural gas heating, and personal car mileage. Useful for comparing your footprint to national averages and identifying the highest-impact reduction opportunities.
Fill in the required fields to see your result.
Key differences
| Air Quality Index Calculator | Carbon Footprint Calculator | |
|---|---|---|
| Category | Environment | Climate |
| Inputs required | 5 | 3 |
| Result | Air Quality Index (AQI) (AQI) | Annual CO2 Emissions (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 annual personal CO₂ emissions from home electricity, natural gas heating, and personal car mileage. Useful for comparing your footprint to national averages and identifying the highest-impact reduction opportunities. |