Whether you're auditing a commercial irrigation system or just trying to work out how long to run the reticulation, these tools are built around Perth's sandy soils, Water Corporation restrictions, and the head types commonly used across WA.
Calculate precipitation rate from catch can volumes. Includes distribution uniformity (DU) scoring for zone audits.
→ TradeWork out mm/hr from head type and spacing. Square, triangular, and rectangular patterns supported.
→How long should you run your reticulation? Enter your precipitation rate and soil type for precise run times.
→ ExternalCheck your two-day-a-week watering roster by house number under Water Corporation restrictions.
↗Built for Perth conditions
Perth's sandy soils, bore water quality, and Water Corporation restrictions are factored into every calculator on this site.
For trades and homeowners
From full zone audits with DU scoring to simple run time calculators — tools for every level of irrigation knowledge.
About these calculators
Who builds these tools?
These calculators are built and maintained by Retic Man, a Perth-based reticulation and bore pump contractor operating across the metro area and hills. We build tools we actually use in the field.
Are they accurate?
All formulas follow standard irrigation engineering principles. Results are as accurate as the inputs — field conditions like wind, pressure variation, and head wear will always introduce some variance. Use these as a professional starting point, not a substitute for on-site measurement.
What's coming next?
We're adding a zone flow calculator for pipe sizing and pump selection, and a soil wetting agent dose calculator. If there's a tool you'd find useful, get in touch.