Farm & Rural calculators
Calculators for the farm and rural property: application rates, blends, and drainage.
- Drain Tile Spacing and Pipe Size CalculatorTile spacing follows the Hooghoudt equation, q L² = 8 K d h + 4 K h², and tile size follows from the flow (acres × drainage coefficient) and Manning's equation at your grade.Inputs: Area drained by this tile line, Drainage coefficient, Soil hydraulic conductivity above the drain
- Fertilizer N-P-K Blend CalculatorPounds of product per acre = pounds of nutrient wanted ÷ (the product's percent nutrient ÷ 100); phosphate products such as DAP also supply nitrogen, which you subtract before figuring the nitrogen source.Inputs: Nitrogen wanted, Phosphate wanted, Potash wanted
- Sprayer Calibration CalculatorGallons per acre = nozzle flow (gpm) × 5,940 ÷ (speed in mph × nozzle spacing in inches).Inputs: Flow per nozzle, Ground speed, Nozzle spacing
In the works
- Grain bin capacity
- Acreage from dimensions
- Seeding rate
- Fence materials