Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Climate
Rainfall Intensity Calculator
Compute rainfall intensity by dividing total rainfall by the duration in hours. Returns inches per hour, a standard metric for designing drainage and assessing flood risk.
Fill in the required fields to see your result.
Climate
Evapotranspiration Calculator
Estimate monthly potential evapotranspiration (PET) from average temperature, daylight hours, and days in the month using a simplified Thornthwaite-style formula. Returns millimetres of water lost per month.
Fill in the required fields to see your result.
Key differences
| Rainfall Intensity Calculator | Evapotranspiration Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 2 | 3 |
| Result | Rainfall Intensity (inches/hour) | Potential Evapotranspiration (mm/month) |
| What it does | Compute rainfall intensity by dividing total rainfall by the duration in hours. Returns inches per hour, a standard metric for designing drainage and assessing flood risk. | Estimate monthly potential evapotranspiration (PET) from average temperature, daylight hours, and days in the month using a simplified Thornthwaite-style formula. Returns millimetres of water lost per month. |