Flow Rate Converter

Convert L/min, L/s, m³/h, US gallons per minute and cubic feet per minute.

Flow Rate Converter

Worked example result

Converted flow rate	3.785412
Summary	1 US gal/min = 3.785412 L/min

One US gallon per minute is exactly 3.785411784 L/min — US pump and faucet ratings convert with this factor.

Convert volumetric flow rates through litres per minute. A litre per second is 60 L/min, a cubic metre per hour is 1000/60 ≈ 16.667 L/min, a US gallon per minute is exactly 3.785411784 L/min, and a cubic foot per minute (CFM) is 28.3168466 L/min.

Context: a shower flows at about 8–10 L/min, a garden hose about 20 L/min, and HVAC systems are sized in CFM — a typical home furnace moves 800–2000 CFM.

The formula

Result = Value × (factor of from-unit in L/min) ÷ (factor of to-unit in L/min)

Worked example

One US gallon per minute is exactly 3.785411784 L/min — US pump and faucet ratings convert with this factor.

The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.

Frequently asked questions

How do I convert CFM to L/s?

Convert CFM to L/min first (× 28.3168466), then divide by 60: 100 CFM ≈ 47.2 L/s. One CFM is about 0.472 L/s.

What is a good shower flow rate?

Modern efficient showerheads are limited to about 7.6 L/min (2.0 gpm) in the US; older heads can exceed 15 L/min.

How many litres per minute is a cubic metre per hour?

About 16.67 L/min: a cubic metre is 1000 litres spread over 60 minutes.

Category: Unit Conversions calculators

Flow Rate Converter