Drip irrigation flow calculator
PROTotal flow and run time for a drip zone.
Short answer: Total GPH = emitters × emitter GPH. Run time = target gal ÷ emitter GPH × 60. 40 × 1 gph emitters, 1 gal target = 40 gph and 60 min per cycle. Enter your measurements above and the drip irrigation flow calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Total zone flow
40 gph
Run time / cycle
60 min
Zone total per cycle
40 gal
How does the drip irrigation flow calculator work?
Total GPH = emitters × emitter GPH. Run time = target gal ÷ emitter GPH × 60.
What does a worked example look like?
40 × 1 gph emitters, 1 gal target = 40 gph and 60 min per cycle.
What do people ask most?
›Max emitters on ½" tubing?
About 200 gph total, or ~250 ft of tubing.
Which garden calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.