Drip Tape Flow
Estimate flow from drip tape emitters per length.
About Drip Tape Flow
Counting the emitters along a length of drip tape and multiplying by each emitter's flow gives the total delivery in gallons per hour. Knowing the flow rate sizes the pump and filter and lets you time irrigation so crops get the right amount without runoff.
Formula
Drip Tape Flow
Emitters = tape length x 12 ÷ spacing; flow = emitters x emitter gph
- gph
- Gallons per hour per emitter
Worked example
With the default values below, Drip Tape Flow returns Flow per Tape Length of 50.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Tape lengthminimum 0 ft
- 100 ft
- Emitter spacingminimum 1 in
- 12 in
- Emitter flowminimum 0 gph
- 0.5 gph
Results
- Flow per Tape Length
- 50.00 gph
- Flow per Minute
- 0.833 gpm
- Emitter Count
- 100 emitters
Step by step
- 1Values used
- 2Drip Tape Flow
- 3Flow per Tape Length= 50.00 gph
- 4Flow per Minute= 0.833 gpm
- 5Emitter Count= 100 emitters
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Drip Tape Flow calculated?
Emitters = tape length x 12 ÷ spacing; flow = emitters x emitter gph Counting the emitters along a length of drip tape and multiplying by each emitter's flow gives the total delivery in gallons per hour.
Why does Drip Tape Flow matter?
Knowing the flow rate sizes the pump and filter and lets you time irrigation so crops get the right amount without runoff.
What values do I need to enter?
This calculator takes 3 inputs: Tape length, Emitter spacing, Emitter flow. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.