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Instant result
Enter the data and press the button to do the calculation.
Online Calculator
Flow rate calculator
Enter a volume in liters and the elapsed time to calculate the volumetric flow rate.
Information
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Local processing
The values are processed directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
How is the flow rate calculated?
Flow rate = volume ÷ time.
What units does it show?
Liters per second, liters per minute, and cubic meters per hour.
Can I enter time in minutes?
Yes. You can choose seconds, minutes, or hours.
Does this tool calculate pressure?
No. Flow rate and pressure are different quantities.