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.
What should you read before you order materials?
Field notes from real jobs that explain the numbers behind this calculator.
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