Understanding Pressure Loss in Your Hose

When water travels through a high-pressure hose, some pressure is lost along the way. Longer hoses and smaller hose diameters create more resistance, which means less pressure reaches your nozzle. Working at height also affects performance, because the machine must push water upwards against gravity.

This calculator helps you estimate:

  • Pressure lost through hose friction
  • Pressure lost or gained from height differences
  • Total pressure at the nozzle
  • Water speed inside the hose

Enter your flow rate, hose length and hose size to get an accurate estimate for your setup.

Pressure Washer Hose Pressure Loss Calculator
Enter the flow rate of your pressure washer in litres per minute.
Total length of high-pressure hose in metres.
Choose the closest size to your high-pressure hose.
Set pressure on your pressure washer (leave blank if you only want hose loss).
Nozzle higher than machine: enter a positive number. Lower: enter a negative number.
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