Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Geography
Sun Angle Calculator
Estimate the sun's maximum elevation angle above the horizon for a given latitude and day of year. Useful for solar panel placement, shading analysis, and understanding seasonal daylight variation.
Fill in the required fields to see your result.
Geography
River Gradient Calculator
Calculate the steepness of a river or stream in metres per kilometre. Essential for hydrologists, geographers, and kayakers assessing flow energy and erosion potential.
Fill in the required fields to see your result.
Key differences
| Sun Angle Calculator | River Gradient Calculator | |
|---|---|---|
| Category | Geography | Geography |
| Inputs required | 2 | 2 |
| Result | Sun Elevation Angle (°) | River Gradient (m/km) |
| What it does | Estimate the sun's maximum elevation angle above the horizon for a given latitude and day of year. Useful for solar panel placement, shading analysis, and understanding seasonal daylight variation. | Calculate the steepness of a river or stream in metres per kilometre. Essential for hydrologists, geographers, and kayakers assessing flow energy and erosion potential. |