Flow Rate Conversion Calculator

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Flow Rate Conversion Calculator

Gallons Per Minute (GPM) Liters Per Minute (LPM) Cubic Feet Per Second (CFS) Cubic Meters Per Second (CMS) Cubic Feet Per Minute (CFPM) Cubic Meters Per Minute (CMM) Cubic Feet Per Hour (CFH) Cubic Meters Per Hour (CMH)
Gallons Per Minute (GPM) Liters Per Minute (LPM) Cubic Feet Per Second (CFS) Cubic Meters Per Second (CMS) Cubic Feet Per Minute (CFPM) Cubic Meters Per Minute (CMM) Cubic Feet Per Hour (CFH) Cubic Meters Per Hour (CMH)
.calculator-wrapper { font-family: Arial, sans-serif; border: 1px solid #ccc; padding: 20px; border-radius: 8px; max-width: 500px; margin: 20px auto; background-color: #f9f9f9; } .calculator-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 20px; } .input-group { display: flex; flex-direction: column; } .input-group label { margin-bottom: 5px; font-weight: bold; } .input-group input, .input-group select { padding: 10px; border: 1px solid #ccc; border-radius: 4px; width: 100%; box-sizing: border-box; } button { grid-column: 1 / -1; padding: 12px 20px; background-color: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; transition: background-color 0.3s ease; } button:hover { background-color: #0056b3; } #result { margin-top: 20px; font-size: 1.2em; font-weight: bold; text-align: center; color: #333; padding: 15px; background-color: #e9ecef; border-radius: 4px; min-height: 40px; /* To prevent layout shifts */ display: flex; align-items: center; justify-content: center; } function convertFlowRate() { var value = parseFloat(document.getElementById("value").value); var fromUnit = document.getElementById("fromUnit").value; var toUnit = document.getElementById("toUnit").value; var resultElement = document.getElementById("result"); var convertedValue = NaN; if (isNaN(value)) { resultElement.textContent = "Please enter a valid number."; return; } // Conversion factors relative to GPM (Gallons Per Minute) var conversionFactors = { 'gpm': 1, 'lpm': 3.78541, 'cfsm': 0.002228, // 1 GPM = 0.002228 CFS 'cms': 0.00006309, // 1 GPM = 0.00006309 CMS 'cfpm': 0.04464286, // 1 GPM = 0.04464286 CFPM (approx 1/22.39) 'cmm': 0.143529, // 1 GPM = 0.143529 CMM (approx 1/6.967) 'cfh': 2.67857, // 1 GPM = 2.67857 CFH (approx 1/0.373) 'cmh': 8.61474, // 1 GPM = 8.61474 CMH (approx 1/0.116) }; // Convert to a base unit (e.g., GPM) var valueInGPM = value * conversionFactors[fromUnit]; // Convert from the base unit to the target unit convertedValue = valueInGPM / conversionFactors[toUnit]; if (isNaN(convertedValue)) { resultElement.textContent = "Conversion error. Please check inputs."; } else { resultElement.textContent = value + " " + fromUnit + " = " + convertedValue.toFixed(6) + " " + toUnit; } }

Understanding Flow Rate and Conversions

Flow rate is a fundamental concept in fluid dynamics and engineering, representing the volume of fluid that passes through a given surface per unit of time. It's a crucial parameter in various applications, from designing plumbing systems and industrial processes to managing water resources and understanding biological systems.

The most common units for flow rate include:

  • Gallons Per Minute (GPM): Widely used in North America for water flow in pipes, pumps, and household applications.
  • Liters Per Minute (LPM): A metric unit commonly used internationally for similar applications as GPM.
  • Cubic Feet Per Second (CFS or ft³/s): Often used for large-scale water flow measurements, such as in rivers, canals, and industrial discharge.
  • Cubic Meters Per Second (CMS or m³/s): The SI unit for flow rate, also used for large-scale fluid transport.
  • Cubic Feet Per Minute (CFPM or ft³/min): Used in HVAC (Heating, Ventilation, and Air Conditioning) systems and industrial ventilation.
  • Cubic Meters Per Minute (CMM or m³/min): A metric equivalent often used in industrial contexts.
  • Cubic Feet Per Hour (CFH or ft³/hr): Less common for fluid but can be seen in specific industrial or ventilation contexts.
  • Cubic Meters Per Hour (CMH or m³/hr): Another metric unit used in industrial applications, particularly for gases or large volumes.

Accurately converting between these units is essential for engineers, technicians, and scientists to compare data, ensure compatibility between different systems, and perform precise calculations. For example, a pump might be rated in GPM, but a system component might be designed based on LPM, requiring a conversion to ensure proper operation.

This calculator allows you to easily convert a given flow rate value from one unit to another. Simply input the numerical value, select the unit you are converting from, and then select the unit you wish to convert to. The calculator will then display the equivalent flow rate in the desired units.

Example Calculation:

Let's say you have a pump that delivers 50 Gallons Per Minute (GPM) and you need to know this flow rate in Liters Per Minute (LPM). You would enter '50' in the 'Value' field, select 'Gallons Per Minute (GPM)' from the 'From Unit' dropdown, and select 'Liters Per Minute (LPM)' from the 'To Unit' dropdown. Clicking 'Convert' would show the result: 50 GPM = 189.2705 L/min.

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