Water Pressure Calculator
Calculate pressure loss from elevation changes, pipe friction, and fittings. Determine available pressure at the fixture.
Static pressure at your water meter or main shutoff — typically 40-80 PSI
Height from water source to fixture — positive = uphill (costs pressure), negative = downhill (gains pressure)
Total pipe run length from source to fixture
Total demand at the fixture — shower ~2.5 GPM, kitchen faucet ~2 GPM
Elbows, tees, valves — each adds equivalent pipe length for friction
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