Pressure Washer Nozzle Size Guide

What size pressure washer nozzle should I get? Well, that depends... First, you need to know what the maximum output PSI (pounds per square inch) is. Also, how many gallons per minute (GPM) your pressure washer puts out.. With that information, use the chart below to see what "series" spray nozzle size to use.

Start at the top with the PSI of your pressure washer. Follow that column down until you find the closest match for the GPM of your machine.

Important Note: Using a nozzle that is too small will damage your equipment.

Nozzle Size Orifice Size Gallons Per Minute PSI (Pounds per Square Inch)
500 750 1000 1100 1200 1250 1500 1750 2000 2250 2500 2600 2700 2750 2800 3000 3100 3200 3250 3500 3750 4000 4500 4600 4700 4800 5000
2 .034"/0.86mm 0.71 0.87 1 1.05 1.1 1.12 1.22 1.32 1.41 1.5 1.58 1.61 1.64 1.66 1.67 1.73 1.76 1.79 1.8 1.87 1.94 2 2.12 2.14 2.17 2.19 2.24
2.5 .042"/1.07mm 0.88 1.08 1.25 1.31 1.37 1.4 1.53 1.65 1.77 1.88 1.98 2.02 2.05 2.07 2.09 2.17 2.2 2.24 2.25 2.34 2.42 2.5 2.65 2.68 2.71 2.74 2.8
3 .043"/1.09mm 1.06 1.3 1.5 1.57 1.64 1.68 1.84 1.98 2.12 2.25 2.37 2.42 2.46 2.49 2.51 2.6 2.64 2.68 2.7 2.81 2.9 3 3.18 3.22 3.25 3.29 3.35
3.5 .048"/1.22mm 1.24 1.52 1.75 1.84 1.92 1.96 2.14 2.32 2.47 2.63 2.77 2.82 2.88 2.9 2.93 3.03 3.08 3.13 3.15 3.27 3.39 3.5 3.71 3.75 3.79 3.83 3.91
4 .052"/1.32mm 1.41 1.73 2 2.1 2.19 2.24 2.45 2.65 2.83 3 3.16 3.22 3.29 3.32 3.35 3.46 3.52 3.58 3.61 3.74 3.87 4 4.24 4.29 4.34 4.38 4.47
4.5 .055"/1.40mm 1.59 1.95 2.25 2.36 2.46 2.52 2.76 2.98 3.18 3.38 3.56 3.63 3.7 3.73 3.76 3.9 3.96 4.02 4.06 4.21 4.36 4.5 4.77 4.83 4.88 4.93 5.03
5 .057"/1.45mm 1.77 2.17 2.5 2.62 2.74 2.8 3.06 3.31 3.54 3.75 3.95 4.03 4.11 4.15 4.18 4.33 4.4 4.47 4.51 4.68 4.84 5 5.3 5.36 5.42 5.48 5.59
5.5 .060"/1.52mm 1.94 2.38 2.75 2.88 3.01 3.07 3.37 3.64 3.89 4.13 4.35 4.43 4.52 4.56 4.6 4.76 4.84 4.92 4.96 5.14 5.33 5.5 5.83 5.9 5.96 6.02 6.15
6 .062"/1.57mm 2.12 2.6 3 3.15 3.29 3.35 3.67 3.97 4.24 4.5 4.74 4.84 4.93 4.97 5.02 5.2 5.28 5.37 5.41 5.61 5.81 6 6.36 6.43 6.5 6.57 6.71
6.5 .064"/1.63mm 2.3 2.81 3.25 3.41 3.56 3.63 3.98 4.3 4.6 4.88 5.14 5.24 5.34 5.39 5.44 5.63 5.72 5.81 5.86 6.08 6.29 6.5 6.89 6.97 7.05 7.12 7.27
7 .067"/1.70mm 2.47 3.03 3.5 3.67 3.83 3.91 4.29 4.63 4.95 5.25 5.53 5.64 5.75 5.8 5.86 6.06 6.16 6.26 6.31 6.55 6.78 7 7.42 7.51 7.59 7.67 7.83
7.5 .070"/1.78mm 2.65 3.25 3.75 3.93 4.11 4.19 4.59 4.96 5.3 5.63 5.93 6.05 6.16 6.22 6.27 6.5 6.6 6.71 6.76 7.02 7.26 7.5 7.95 8.04 8.13 8.22 8.39
8 .072"/1.83mm 2.83 3.46 4 4.2 4.38 4.47 4.9 5.29 5.66 6 6.32 6.45 6.57 6.63 6.69 6.93 7.04 7.16 7.21 7.48 7.75 8 8.49 8.58 8.67 8.76 8.94
8.5 .074"/1.88mm 3.01 3.68 4.25 4.46 4.66 4.75 5.21 5.62 6.01 6.38 6.72 6.85 6.98 7.05 7.11 7.36 7.48 7.6 7.66 7.95 8.23 8.5 9.02 9.12 9.21 9.31 9.5
9 .076"/1.93mm 3.18 3.9 4.5 4.72 4.93 5.03 5.51 5.95 6.36 6.75 7.12 7.26 7.39 7.46 7.53 7.79 7.92 8.05 8.11 8.42 8.71 9 9.55 9.65 9.76 9.86 10.06
9.5 .078"/1.98mm 3.36 4.11 4.75 4.98 5.2 5.31 5.82 6.28 6.72 7.13 7.51 7.66 7.81 7.88 7.95 8.23 8.36 8.5 8.56 8.89 9.2 9.5 10.08 10.19 10.3 10.41 10.62
10 .080"/2.03mm 3.54 4.33 5 5.24 5.48 5.59 6.12 6.61 7.07 7.5 7.91 8.06 8.22 8.29 8.37 8.66 8.8 8.94 9.01 9.35 9.68 10 10.61 10.72 10.84 10.95 11.18
11 .083"/2.11mm 3.89 4.76 5.5 5.77 6.02 6.15 6.74 7.28 7.78 8.25 8.7 8.87 9.04 9.12 9.2 9.53 9.68 9.84 9.92 10.29 10.65 11 11.67 11.8 11.92 12.05 12.3
12 .087"/2.21mm 4.24 5.2 6 6.29 6.57 6.71 7.35 7.94 8.49 9 9.49 9.67 9.86 9.95 10.04 10.39 10.56 10.73 10.82 11.22 11.62 12 12.73 12.87 13.01 13.15 13.42
13 .091"/2.31mm 4.6 5.63 6.5 6.82 17.2 7.27 7.96 8.6 9.19 9.75 10.28 10.48 10.68 10.78 10.88 11.26 11.44 11.63 11.72 12.16 12.59 13 13.79 13.94 14.09 14.24 14.53
14 .       7.34 7.67   8.57   9.9   11.07 11.29 11.5   11.71 12.12 12.32 12.52   13.1   14 14.85 15.01 15.18 15.34 15.65
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