Use this crop irrigation feed conversion calculator to turn operational assumptions into a clear planning estimate. Enter the measurements from your project, field, or greenhouse, then review the main result alongside the supporting totals. The calculator keeps the formula visible so you can check units, compare scenarios, and understand exactly which assumptions drive the answer.
Because “feed” can mean different production inputs, label and measure the input consistently for every comparison.
This is an operational ratio, not a universal crop benchmark; crop, season, and input definitions materially affect it.
Using 180 kg of a defined input for 120 kg of marketable biomass gain gives a conversion ratio of 1.50 and water productivity of 1.33 kg/m³ with 90 m³ of water.
The result changes directly with the quantities in the formula. Change one field at a time to see which operating assumption has the largest effect on fcr.
Use the units printed beside each field. Convert measurements before entering them when a different unit is shown, because the built-in constants assume the displayed units.
Run separate scenarios for each period or operating condition, then add the applicable totals. A single blended input can hide important peaks and delays.
No. It includes only the losses, efficiency factors, or allowances shown in the input panel. Add separate allowances for conditions not represented.
Actual performance can differ because of measurement error, weather, equipment condition, work sequencing, material variability, and the quality of the assumptions entered.
| Metric | Direction |
|---|---|
| Input conversion ratio | Lower uses less input per gain |
| Water productivity | Higher yield per water volume |