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Flow Rate Converter - Online GPM L/s & m³/h Tool

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Frequently Asked Questions

How do you convert GPM to L/s?

To convert US gallons per minute (GPM) to liters per second (L/s), multiply the flow rate by 0.06309. For example, 10 GPM ≈ 0.6309 L/s. Formula: L/s = GPM × 0.0630901964.

What is the conversion from L/s to m³/h?

1 liter per second (L/s) equals 3.6 cubic meters per hour (m³/h). Multiply L/s by 3.6 to get m³/h.

Is GPM US or UK gallon?

Our tool supports both US liquid gallon (≈3.785 L) and UK imperial gallon (≈4.546 L). By default, GPM refers to US gallons per minute. Use the dropdown to switch to UK GPM for accurate imperial conversions.

How do I convert m³/h to CFM?

Multiply m³/h by 0.58857777 to get CFM (cubic feet per minute). Conversely, 1 CFM ≈ 1.699 m³/h.

Why use L/s instead of m³/h?

L/s is often used in smaller flow applications like plumbing or medical devices, while m³/h is common for industrial or HVAC flows. This converter lets you instantly switch between all units.

How accurate are the conversions?

All conversions use high‑precision factors (up to 10 decimal places). Results are displayed with up to 6 significant digits for practical use.

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