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
Household Water Usage Calculator
Estimate daily household water usage based on showering, dishwasher and laundry loads, household size, and appliance age. Use it to spot the biggest water consumers in your home and prioritize fixture upgrades or behaviour changes.
Fill in the required fields to see your result.
Key differences
| Air Quality Index Calculator | Household Water Usage Calculator | |
|---|---|---|
| Category | Environment | Environment |
| Inputs required | 5 | 5 |
| Result | Air Quality Index (AQI) (AQI) | Daily Water Usage (gallons) |
| 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 daily household water usage based on showering, dishwasher and laundry loads, household size, and appliance age. Use it to spot the biggest water consumers in your home and prioritize fixture upgrades or behaviour changes. |