Border Irrigation Calculator
Calculate border strip irrigation volume from strip dimensions and application depth. Determine inflow rate needed for uniform water distribution.
Free Irrigation Calculators
15 toolsWater need estimators. Browse our free irrigation tools below — no sign-up required.
Center Pivot Coverage Calculator
Calculate center pivot irrigation coverage area from pivot length. Estimate acres irrigated with and without corner systems using π × r².
Crop Water Requirement Calculator
Calculate crop water requirement (CWR) by summing ETc values across growth stages. Estimate total irrigation water needed for your crop season.
Drip Emitter Spacing Calculator
Determine optimal drip emitter spacing based on soil type and crop root spread. Match emitter wetted diameter to root zone for efficient watering.
Drip Irrigation Flow Rate Calculator
Calculate total drip irrigation flow rate from emitter count and flow per emitter. Convert GPH to GPM for pump sizing and system design.
Drip Line Length Calculator
Calculate total drip line or tape length needed for a field. Factor in field dimensions, row spacing, and header connections for material ordering.
Flood Irrigation Volume Calculator
Calculate flood irrigation water volume in acre-feet and gallons from irrigated area and application depth. Plan water deliveries accurately.
Furrow Irrigation Calculator
Estimate furrow irrigation application depth from advance time, recession time, and flow rate. Optimize furrow irrigation management for efficiency.
Irrigation Cost per Acre-Inch Calculator
Calculate the total cost to apply one acre-inch of irrigation water including energy, maintenance, labor, and water charges for budget planning.
Irrigation Depth per Application Calculator
Calculate gross irrigation depth per application from net depth and application efficiency. Plan how much water your system must deliver.
Irrigation Frequency Calculator
Calculate how often to irrigate by dividing net application depth by daily crop ETc. Determine the interval in days between irrigations.
Irrigation Scheduling Calculator
Schedule your next irrigation using soil water balance. Calculate trigger point from MAD, available water capacity, and root zone depth.
Irrigation System Efficiency Calculator
Calculate overall irrigation system efficiency by multiplying conveyance, distribution, and application efficiencies. Identify where water is lost.
LEPA Efficiency Calculator
Compare Low Energy Precision Application (LEPA) irrigation efficiency against sprinkler and flood systems. Calculate water savings and net delivery.
Sprinkler Application Rate Calculator
Calculate sprinkler application rate in inches per hour from GPM and sprinkler spacing. Ensure rate stays below soil intake to prevent runoff.