Design efficient micro sprinkler layouts for healthy plants. Check overlap, spacing, and flow in minutes. Download reports and share them with your crew easily.
| Plot (m²) | Radius (m) | Arc (deg) | Layout | X × Y (m) | Sprinklers | Application (mm/h) | Status |
|---|---|---|---|---|---|---|---|
| 200 | 3.0 | 360 | Square | 3 × 3 | 23 | 6.90 | Good |
| 120 | 2.5 | 180 | Square | 2.5 × 2.5 | 20 | 10.00 | Borderline |
| 300 | 3.5 | 360 | Triangular | 3.5 × 3.0 | 33 | 5.50 | Good |
Coverage mapping helps match emitter reach to plant geometry and soil intake. Micro sprinklers create a wetted disc, so spacing must keep adjacent discs overlapping enough to avoid dry stripes while still limiting wasted spray beyond root zones. When you enter radius and arc, the calculator converts that footprint into an effective area that can be compared with your proposed grid.
Spacing interacts with pressure and nozzle choice. A small pressure drop can shrink radius and reduce uniformity, especially on long laterals or sloped beds. Use measured operating pressure at the head, then confirm radius using a catch‑can check. If your layout is triangular, the staggered rows reduce gaps, letting you cover the same plot with fewer heads at similar uniformity.
Wind and canopy height also influence distribution. Mounting higher increases diameter but can raise drift; mounting lower improves targeting under foliage. In greenhouses, low wind allows larger spacing, while open fields often need extra overlap. Consider obstacles like trellises and raised beds that block spray, and position heads to avoid shadows. Record adjustments so future expansions keep the same hydraulic balance.
Arc selection is practical for edges, pathways, and tree basins. Half and quarter patterns prevent overspray onto trunks, mulch rings, or hardscape. The calculator treats arc as a fraction of a circle, which quickly shows how partial patterns lower wetted area and may require tighter spacing or additional heads near boundaries.
Flow inputs turn coverage into application rate. By multiplying heads by flow, the tool estimates millimeters per hour over the plot. Compare that rate to soil infiltration to reduce runoff on clay and prevent water stress on sandy soils. Use shorter cycles for slow soils and longer soaks for deep rooting crops.
Use the status message to iterate. If the ratio is risky, reduce spacing, raise radius with correct nozzles, or split the zone for better pressure control. After installation, keep filters clean, flush lines, and recheck uniformity each season to protect yield and plant health.
Run the system at normal pressure, then place small cups along a line from the head. The farthest point receiving consistent water defines radius. Repeat in two directions and use the average for planning.
For most garden beds, 10–20% overlap improves uniformity and reduces dry strips. In windy areas or coarse soils, choose the higher end. In sheltered zones, you can often use lower overlap.
Triangular spacing staggers rows, reducing gaps between wetted circles. It can improve uniformity without tightening spacing as much. Use it where plants are evenly distributed and head placement flexibility is available.
Arc is a direct fraction of a full circle. A 180° head wets about half the circular area at the same radius, so the served area must shrink or more heads are needed near edges and corners.
It is the average depth applied over the plot each hour. Compare it with soil infiltration and desired irrigation depth. A lower rate often needs longer runtime, while a higher rate may require shorter cycles.
Start by reducing spacing in the direction with the largest gap. If pressure is low, improve hydraulics or use a nozzle with a larger radius. For edge zones, add partial‑arc heads rather than pushing spacing too far.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.