Every foot of hose, every coupler and every story of climb costs PSI. Build your run segment by segment and see what's left at the trigger — and whether a hose upgrade is worth the money.
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Friction loss is why a 4 GPM machine feels weak at 200 feet. This calculator walks your actual run — lengths, diameters, couplers, vertical climb — and totals the loss honestly, then tells you which single change buys the most pressure back.
More free pressure washing tools: SH mix calculator · Nozzle lab · Tank meter · Mobile rig builder · the full wash bench · all free tools
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<iframe src="https://getcrewplate.com/embed?trade=wash&tool=hose" width="100%" height="1150" style="border:1px solid #CBD5E1;border-radius:10px" loading="lazy" title="Hose loss"></iframe> <p style="font:12px/1.5 system-ui;color:#64748B;margin:6px 0 0">Calculator by <a href="https://getcrewplate.com/free-tools">Crewplate</a> — 26 free trade calculators</p>