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Water Features · I2

Pool Deck Jet Arc & Flow Calculator

Total flow and approximate arc distance for your deck jets, with pump and pipe sizing.

Measure the inputsA 45-degree nozzle angle throws the water the farthest.
Read the full resultAdd about 10% to total flow when sizing the feed pump.
Check the boundaryTwo-inch pipe handles up to roughly 40 GPM of deck jets comfortably.

Useful forWater FeaturesPlanningComparisonVerification

Live calculation

Deck jet inputs

✓ Checked May 2026

Enter jet count, flow per jet, and nozzle angle.

Change a value. See the result.

Required fields are marked *. Engine validation and warnings remain active.

Enter the known values. Let the engine handle the calculation.

✓ Formula checked↻ Live result○ No account needed

Planning estimate only. Confirm product labels, equipment specifications, qualified-professional advice and local requirements before acting.

The result, explained

Use the Pool Deck Jet Arc & Flow Calculator result with context.

Total flow and approximate arc distance for your deck jets, with pump and pipe sizing.

01

The purpose

What does this calculator estimate?

Total flow and approximate arc distance for your deck jets, with pump and pipe sizing.

02

The tool

What information does it use?

  • Number of jets: enter a measured or verified value
  • Flow per jet: GPM each deck jet uses.
  • Nozzle angle: Launch angle; 45° gives the longest arc.
  • Launch height: Nozzle height above the water.
03

The method

How to use this calculator

  1. Number of jetsEnter the value you can verify.
  2. Flow per jetGPM each deck jet uses.
  3. Nozzle angleLaunch angle; 45° gives the longest arc.
  4. Launch heightNozzle height above the water.
04

The relationship

The formula in plain English

Total GPM = jets × GPM per jet; pump GPM = total × 1.10 margin

Arc distance grows with flow per jet (≈4 ft at 3 GPM, 9 ft at 8 GPM); 45° gives max reach.
05

Worked through

A worked example: 4 deck jets at 5 GPM, 45° nozzle

  1. Total GPM = 4 × 5 = 20 GPM
  2. Pump GPM = 20 × 1.10 = 22 GPM
  3. Arc ≈ 6 ft per jet at 5 GPM
Total flow and approximate arc by jet count and flow per jet.
Jets3 GPM (4 ft arc)5 GPM (6 ft arc)8 GPM (9 ft arc)
2 jets6 GPM10 GPM16 GPM
4 jets12 GPM20 GPM32 GPM
6 jets18 GPM30 GPM48 GPM
8 jets24 GPM40 GPM64 GPM
06

Why it matters

How the result supports the next decision

A 45-degree nozzle angle throws the water the farthest.

Add about 10% to total flow when sizing the feed pump.

07

Good inputs

Improve the estimate before relying on it

  • A 45-degree nozzle angle throws the water the farthest.
  • Add about 10% to total flow when sizing the feed pump.
  • Two-inch pipe handles up to roughly 40 GPM of deck jets comfortably.
  • Match jet flow to the arc you want — higher GPM reaches farther.
  • Aim deck jets to land in the pool, not on the deck or beyond.
08

The boundary

How to interpret the result

Measurements, equipment specifications, site conditions and local requirements can change the practical result.

The engine reports invalid inputs and safety warnings beside the result. Resolve those messages before using the estimate.

09

Before acting

What should override this estimate?

  • Measured site conditions and current test results
  • Product labels and manufacturer specifications
  • Qualified-professional advice and applicable local codes
10

Common questions

Frequently asked questions

How much water do deck jets use?

Multiply the number of jets by the flow per jet. Typical deck jets run 3 to 8 GPM each, so four jets at 5 GPM use 20 GPM total. Add about 10 percent margin when sizing the feed pump so the jets reach their full arc even with minor losses.

How far do deck jets shoot water?

Arc distance grows with flow per jet — roughly 4 feet at 3 GPM, 6 feet at 5 GPM, and 9 feet at 8 GPM, with a 45-degree nozzle giving the longest reach. Aim them so the stream lands in the water, accounting for the launch height above the surface.

What nozzle angle is best for deck jets?

About 45 degrees gives the maximum arc distance, the same principle as projectile motion. Steeper angles send the water higher but not as far; shallower angles keep it low and short. Most installations use around 45 degrees and then fine-tune the aim so streams land cleanly in the pool.

What size pump for deck jets?

Size it to the total GPM of all jets plus about a 10 percent margin, at the head of the feed plumbing. Four 5-GPM jets need a pump comfortably delivering 22 GPM. Often deck jets run off a dedicated line or a shared feature circuit rather than the main filtration pump.

What pipe size for deck jets?

Two-inch pipe handles up to roughly 40 GPM of deck jets at a reasonable velocity, which covers most residential arrays. For larger installations, step up the pipe size to keep velocity in the safe range and avoid starving the jets at the far end of the run.

How far do pool deck jets shoot?

About 4 ft at 3 GPM up to 9 ft at 8 GPM, with a 45° angle giving the longest reach.

How much flow do deck jets need?

3–8 GPM per jet; multiply by jet count and add ~10% for the pump.

What angle for deck jets?

Around 45 degrees gives the maximum arc distance.

Primary sources

Use the result with current guidance.

These official references support safe planning context. Product labels, local requirements and qualified-professional advice take priority over a general calculator estimate.