Liters per Minute Calculator

Find flow rate in liters per minute.

Volume

Time to fill

Flow rate (L/min) 100

Flow rate (GPM) 26.417

Formula: L/min = liters ÷ (seconds ÷ 60)

Step-by-step with your numbers:

1. Values used:

2. Volume = 50

3. Time to fill = 30

5. Flow rate = 100L/min

6. Flow rate = 26.417GPM

Did we solve your problem today?

Measure water flow by timing how long a known volume takes to fill.

The math behind it

L/min = liters ÷ minutes. Divide by 3.785 for US gallons per minute.

50 L in 30 s → 100 L/min (26.4 GPM).

Quick test?

Time filling a known bucket, then divide.