How Do I Calculate Flow Rate

Flow Rate Calculator

Flow rate is a fundamental concept in fluid dynamics and is defined as the volume of fluid that passes through a given surface per unit time. It's a crucial measurement in many applications, from engineering and environmental science to everyday tasks like gardening.

Seconds Minutes Hours
Liters Gallons Cubic Meters Cubic Feet
.calculator-container { font-family: sans-serif; border: 1px solid #ddd; padding: 20px; border-radius: 8px; max-width: 500px; margin: 20px auto; background-color: #f9f9f9; } .calculator-container h2 { text-align: center; color: #333; margin-bottom: 15px; } .calculator-container p { color: #555; line-height: 1.6; margin-bottom: 25px; text-align: justify; } .inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-bottom: 20px; } .input-group { display: flex; flex-direction: column; } .input-group label { margin-bottom: 5px; font-weight: bold; color: #444; } .input-group input, .input-group select { padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; box-sizing: border-box; /* Ensure padding and border are included in the element's total width and height */ } .input-group input:focus, .input-group select:focus { border-color: #007bff; outline: none; } button { display: block; width: 100%; padding: 12px 20px; background-color: #007bff; color: white; border: none; border-radius: 4px; font-size: 1.1rem; cursor: pointer; transition: background-color 0.3s ease; margin-top: 10px; } button:hover { background-color: #0056b3; } #result { margin-top: 25px; padding: 15px; background-color: #e7f3ff; border: 1px solid #cce5ff; border-radius: 4px; text-align: center; font-size: 1.2rem; color: #004085; font-weight: bold; } function calculateFlowRate() { var volume = parseFloat(document.getElementById("volume").value); var time = parseFloat(document.getElementById("time").value); var volume_unit = document.getElementById("volume_unit").value; var time_unit = document.getElementById("time_unit").value; var resultDiv = document.getElementById("result"); resultDiv.innerHTML = ""; // Clear previous results if (isNaN(volume) || isNaN(time) || volume <= 0 || time <= 0) { resultDiv.innerHTML = "Please enter valid positive numbers for Volume and Time."; return; } var time_in_seconds = time; if (time_unit === "minutes") { time_in_seconds = time * 60; } else if (time_unit === "hours") { time_in_seconds = time * 3600; } var volume_in_liters = volume; if (volume_unit === "gallons") { // 1 US Gallon ≈ 3.78541 Liters volume_in_liters = volume * 3.78541; } else if (volume_unit === "cubic_meters") { // 1 Cubic Meter = 1000 Liters volume_in_liters = volume * 1000; } else if (volume_unit === "cubic_feet") { // 1 Cubic Foot ≈ 28.3168 Liters volume_in_liters = volume * 28.3168; } var flow_rate_liters_per_second = volume_in_liters / time_in_seconds; // You can add conversions to other common units if needed var flow_rate_liters_per_minute = flow_rate_liters_per_second * 60; var flow_rate_gallons_per_minute = flow_rate_liters_per_minute / 3.78541; var flow_rate_cubic_meters_per_hour = (flow_rate_liters_per_second * 3600) / 1000; var resultHtml = "

Flow Rate Results:

"; resultHtml += "Liters per Second (L/s): " + flow_rate_liters_per_second.toFixed(2) + " L/s"; resultHtml += "Liters per Minute (L/min): " + flow_rate_liters_per_minute.toFixed(2) + " L/min"; resultHtml += "Gallons per Minute (GPM): " + flow_rate_gallons_per_minute.toFixed(2) + " GPM"; resultHtml += "Cubic Meters per Hour (m³/h): " + flow_rate_cubic_meters_per_hour.toFixed(2) + " m³/h"; resultDiv.innerHTML = resultHtml; }

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