Examples
Examples
Try the starting example
- Cell-center latitudes (degrees)
- 0,30,60
- Latitude resolution (degrees)
- 0.01
- Longitude resolution (degrees)
- 0.01
- Spherical earth radius (m)
- 6371008.8
- Cell areas by latitude (m²)
- [1236434.58524,1070783.76094,618217.292623]
- Sum of one cell at each supplied latitude (m²)
- 2,925,435.638807
Try another scenario
- Cell-center latitudes (degrees)
- [10, 40, 70]
- Latitude resolution (degrees)
- 0.01
- Longitude resolution (degrees)
- 0.01
- Spherical earth radius (m)
- 6371008.8
- Cell areas by latitude (m²)
- [1217650.36564,947163.843308,422885.534058]
- Sum of one cell at each supplied latitude (m²)
- 2,587,699.743007
Calculation method
Calculation method
Cell areas by latitude (m²)
R² delta longitude × (sin(north edge)−sin(south edge)); spherical model.
Sum of one cell at each supplied latitude (m²)
Sum calculated cell areas.
Symbols and units
- a
- Cell-center latitudes (degrees)
- b
- Latitude resolution (degrees)
- c
- Longitude resolution (degrees)
- d
- Spherical earth radius (m)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Grid resolution, latitude rows, earth model. Returns Cell-area estimates and totals. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Cell-center latitudes (degrees): minimum -89.9, maximum 89.9. Latitude resolution (degrees): minimum 1e-12, maximum 10. Longitude resolution (degrees): minimum 1e-12, maximum 10. Spherical earth radius (m): minimum 1e-12, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.