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Calculated result—
Planning estimate only. Check units and verify critical results independently.
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Hydraulics calculatorFlow Rate Converter
Convert flow between litres per minute, litres per second, cubic metres per hour and US gallons per minute.
Practical guidance
Use consistent units and check the context.
Convert flow between litres per minute, litres per second, cubic metres per hour and US gallons per minute. The calculator is designed for quick workshop, maintenance and engineering planning. For specifications, certification or safety-critical work, verify the answer independently.
Common mistakes
- Mixing US and Imperial gallons
- Comparing pump free-flow ratings with loaded system flow
- Ignoring pressure losses through hoses, valves and fittings
Frequently asked questions
What does this calculator do?
Convert flow between litres per minute, litres per second, cubic metres per hour and US gallons per minute.
Is the answer exact?
The mathematics follows the inputs shown, but real systems can include tolerances, losses, temperature effects and installation conditions.