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LPM (Liter per Minute) to GPM (Gallons per Minute) Calculator

Last updated: 27 Sep 2025 | Author: Brij | Review By: Irshad
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Convert Liters per Minute (LPM) to Gallons per Minute (GPM) easily with our free calculator. Perfect for plumbing, engineering, irrigation, and water system projects.

LPM
Liters per Minute
GPM
Gallons per Minute

Flow rates are measured in different units depending on the system of measurement. In many countries, Liters per Minute (LPM) is common, while in the U.S., Gallons per Minute (GPM) is widely used.

Our LPM to GPM Calculator provides a simple way to convert between these units for accurate fluid measurement in engineering and construction projects.

Formula: LPM to GPM Conversion

The conversion is based on the fact that 1 LPM ≈ 0.264172 GPM.

GPM=LPM×0.264172\text{GPM} = \text{LPM} \times 0.264172GPM=LPM×0.264172

Example Calculation

Suppose you have a flow rate of 200 LPM. To convert it to GPM:

GPM=200×0.264172≈52.83\text{GPM} = 200 \times 0.264172 \approx 52.83GPM=200×0.264172≈52.83

So, 200 LPM ≈ 52.83 GPM.

Conclusion

With this calculator, you can quickly convert Liters per Minute (LPM) into Gallons per Minute (GPM). This is especially useful in plumbing, agriculture, HVAC, and industrial projects where both metric and imperial units are used.

FAQs

1. Why is converting LPM to GPM important in construction or plumbing?

In construction and plumbing, water flow rates are often specified in GPM (especially in the U.S.), while equipment or standards in other regions may use LPM. Converting LPM to GPM ensures accurate sizing of pipes, pumps, and irrigation systems to meet project requirements.

2. How do I convert LPM to GPM for a large-scale water system?

For large-scale systems, use the same conversion factor (1 LPM = 0.264172 GPM). For precision, use a calculator or software to handle large values. For example, a system with 1000 LPM would be 1000 × 0.264172 = 264.172 GPM. Always double-check conversions for critical applications like water supply or drainage.

3. Are there online tools or calculators for LPM to GPM conversion?

Yes, many online tools, such as flow rate calculators on engineering or plumbing websites, can convert LPM to GPM instantly. Alternatively, you can use a simple formula in a spreadsheet (e.g., =A1*0.264172 in Excel, where A1 is the LPM value) for quick conversions.


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