Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Climate
Green Roof Benefits Calculator
Estimate annual energy savings, stormwater retention, and combined financial benefits of installing a green roof. Use it when comparing green roof types or justifying the investment to building owners and planners.
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
| Green Roof Benefits Calculator | Evapotranspiration Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 5 | 3 |
| Result | Annual Environmental Value ($) | Potential Evapotranspiration (mm/month) |
| What it does | Estimate annual energy savings, stormwater retention, and combined financial benefits of installing a green roof. Use it when comparing green roof types or justifying the investment to building owners and planners. | 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. |