Question 1

How do you convert GPM to LPM?

Accepted Answer

Multiply US GPM by 3.78541. Example: 50 GPM = 189.3 LPM.

Question 2

What is GPM used for?

Accepted Answer

Pumps, sprinkler systems, pool filters, and plumbing. Most common US flow rate unit for liquids.

Question 3

How does pipe diameter affect flow rate?

Accepted Answer

Flow rate is proportional to the square of diameter. Doubling pipe diameter quadruples potential flow rate at the same pressure.

Question 4

What's the difference between volume and mass flow rate?

Accepted Answer

Volume flow (gallons/min) ignores fluid density. Mass flow (kg/s) accounts for density, important when density changes with temperature or pressure.

gpm to lpm Converter

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