Available flow at operating pressure
Supply check · L/hour
Allowed range: 0 to 100000000
Drip Zone Flow Calculator
Total operating emitters across several lines and compare a measured supply.
Open this toolSeveral drip lines running together draw more water than one line on its own.
List the operating emitters across the zone and compare their combined demand with measured supply.
Inputs and controls
Line name
Zone lines
Emitter count
Zone lines · emitters
Allowed range: 1 to 1000000
Each emitter flow
Zone lines · L/hour
Allowed range: 0.001 to 10000
How to use
- Enter available flow at operating pressure.
- Add the entries in zone lines as separate rows. Include line name, emitter count and each emitter flow for each row.
- Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why use this tool
The zone schedule avoids comparing a whole system with the flow of only one emitter.
Before relying on the result
Lines listed are assumed to run together. A flow check alone does not size a pump or pipe.
Tool limitations
Lines listed are assumed to run together. A flow check alone does not size a pump or pipe.
Questions
Does a matching flow size the pump?
No. Pressure, pipe losses and operating conditions also matter. This is a flow comparison.
What should I check before using Drip Zone Flow Calculator?
Check Available flow at operating pressure, Line name, Emitter count and Each emitter flow. Use the exact units shown beside the controls and replace any example values with your own inputs.
Source page last modified: 2026-10-04T13:08:12+00:00. This profile describes the tool; use its page to run it.
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