LPM to GPM Converter – Liters to Gallons per Minute

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Litres per Minute (L/min) to Gallons per Minute (GPM) Converter

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Have you ever wondered why converting lpm to gpm is necessary when measuring water flow? Let me tell you an experience of mine. Some time ago, I bought a water pump, and the packaging said “15 LPM”. But I didn’t understand how much it was according to American standards. Then I realized how important the conversion of volume flow rate is, especially when you use products from different countries.

In today’s guide, I will explain to you every aspect of converting liter per minute to gpm. Whether you are an engineer, a plumber, or just a regular person who wants to understand their home water system, this article is for you.

LPM to GPM Converter – Liters to Gallons per Minute

Understanding Litres per Minute (L/min) and Gallons per Minute (GPM)

Look, when we talk about the flow rate of a liquid, different measurement systems are used around the world. It’s just like how some people measure distance in kilometers and others in miles.

What is a Litre per Minute (L/min)?

Litre per minute (l per min to gpm) is a unit of the metric system that tells how many liters of water or other liquid flow in a minute. It is standard in Europe, Asia, and most parts of the world.

For example, if your home faucet delivers 10 liters of water in a minute, then its flow rate is 10 L/min. Simple and easy, right?

What is a Gallon per Minute (GPM)?

GPM or gallons per minute is part of the American and British measurement systems. Now here’s an interesting fact – the gallon is different in both the US and the UK! When we talk about lpm to gpm us, we are usually talking about US gallons.

Now think about it: a gallon in the US is approximately 3.785 liters, while in the UK it is 4.546 liters. This is why it is important to be careful when converting lpm to gpm.

How to Convert Litres per Minute to Gallons per Minute

Now let’s get down to the real work. How hard is this conversion really? The answer is: Not at all!

Litres per Minute to Gallons per Minute Formula

The formula for converting liter/min to gpm is very simple:

GPM = LPM × 0.264172

This conversion factor (0.264172) is the magic number that converts liters to gpm. I have it saved in my mobile calculator – because you never know when you might need it!

Step-by-Step Conversion Example

Let’s look at a practical example. Let’s say you have a pump that delivers 20 L/min of water.

Step 1: Take the L/min value = 20 Step 2: Multiply it by 0.264172 Step 3: 20 × 0.264172 = 5.28 GPM

So your pump is delivering approximately 5.28 gallons per minute of water. Was that easy?

Now let’s take another example. If your home water supply is 45 liters per minute to gallons per minute and you want to know: 45 × 0.264172 = 11.88 GPM

Manual Conversion vs Online Converter

Look, I’m being honest. Manual calculation is fine when you have the time and only need to do one or two conversions. But what if you have to convert lpm to gallons per minute frequently? Then an online converter is your best friend.

I remember when I was working on a construction site, I had to do this conversion 20-30 times a day. You can imagine how time-consuming it was to pull out a calculator each time! That’s when I realized how useful a good online tool could be.

Litres per Minute to Gallons per Minute Conversion Table

These tables are very useful when you don’t have internet access or need a quick reference.

Quick Reference Conversion Chart

Here are some common values that are used in everyday life:

• 5 L/min = 1.32 GPM (for small taps)

• 10 L/min = 2.64 GPM (standard bathroom faucet)

• 15 L/min = 3.96 GPM (shower heads)

• 20 L/min = 5.28 GPM (garden hoses)

• 50 L/min = 13.21 GPM (industrial applications)

Complete Conversion Table (L/min to GPM)

This is a comprehensive table that shows the complete conversion of liters/min to gpm:

L/min	GPM (US)
1	0.26
5	1.32
10	2.64
15	3.96
20	5.28
25	6.60
30	7.93
40	10.57
50	13.21
75	19.81
100	26.42
150	39.63
200	52.83

You would think that these numbers are difficult to remember, but when you use them daily, they are automatically remembered.

Common Volume Flow Rate Conversions

Now that we have mastered l min to gpm, let’s look at some other useful conversions. Because in the world of engineering, you deal with different units.

L/min to m³/h

Sometimes you also need the flow rate in cubic meters per hour, especially in large-scale industrial applications.

Formula: m³/h = L/min × 0.06

Example: 100 L/min = 6 m³/h

L/min to CFM

CFM stands for cubic feet per minute – it is used a lot in HVAC and ventilation systems.

Formula: CFM = L/min × 0.0353

L/min to L/s

This is the easiest conversion because both are in the metric system.

Formula: L/s = L/min ÷ 60

Example: 60 L/min = 1 L/s

Now think about it, if you need the conversion in minutes to liters, just reverse it. Knowing these conversions is like having a Swiss Army knife – it comes in handy in every situation.

Frequently Asked Questions (FAQs)

Q1: What is the correct conversion factor for lpm to gpm?

The correct conversion factor is 0.264172. This is for US gallons. If you want UK gallons, use 0.219969.

Q2: Are minute gpm and liter per min to gpm the same thing?

Yes, they are basically units of volume flow rate, just the measurement system is different.

Q3: Can I convert to gallons per hour as well?

Absolutely! First, find the GPM, then multiply it by 60 because there are 60 minutes in an hour.

Q4: Which unit is better for industrial applications?

It depends on where you are working. GPM is the standard in the US, while L/min is more common in the rest of the world.

Q5: Is the online converter accurate?

Yes, good quality converters are quite accurate and faster than manual calculation.

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