Wind Chill Calculator

Calculate wind chill quickly and easily with this free online calculator. Enter temperature and wind speed to determine the wind chill factor in Fahrenheit. Temperature: °F °C Wind Speed: mph km/h Calculate Wind Chill Show Formula Details Wind Chill = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16) Where T = temperature in °F and V = wind speed in mph Limitations: Valid for temperatures ≤ 50°F (10°C) Valid for wind speeds ≥ 3 mph (4.8 km/h) Wind Chill Danger Levels: Above 30°F Low Risk 15-30°F Moderate Risk 0-15°F High Risk Below 0°F Extreme Risk /* Base Styles - Jannah Theme Compatible */ .jannah-wcc-container { width: 100%; display: flex; justify-content: center; font-family: 'Poppins', sans-serif; margin: 2rem 0; } /* Responsive Card */ .jannah-wcc-card { width: 100%; background: #ffffff; border-radius: 12px; padding: 1.5rem; box-shadow: 0 5px 20px rgba(0,0,0,0.08); transition: all 0.3s ease; position: relative; overflow: hidden; border: 1px solid rgba(0,0,0,0.08); } /* Title Styling */ .jannah-wcc-title { font-size: 1.5rem; font-weight: 600; color: #2c3e50; margin-bottom: 1.5rem; text-align: center; position: relative; } .jannah-wcc-title:after { content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: #3498db; border-radius: 2px; } /* Input Styling */ .jannah-wcc-input-group { margin-bottom: 1.25rem; } .jannah-wcc-input-group label { display: block; margin-bottom: 0.5rem; color: #34495e; font-weight: 500; font-size: 0.95rem; } .jannah-wcc-input-with-unit { display: flex; align-items: center; position: relative; } .jannah-wcc-input { width: 100%; padding: 0.75rem 1rem; border: 1px solid #e0e0e0; border-radius: 8px; font-size: 1rem; font-family: 'Poppins', sans-serif; transition: all 0.3s ease; } .jannah-wcc-input:focus { border-color: #3498db; box-shadow: 0 0 0 3px rgba(52,152,219,0.15); outline: none; } /* Unit Toggle Styling */ .jannah-wcc-unit-toggle { position: absolute; right: 8px; display: flex; background: #f5f7fa; border-radius: 6px; overflow: hidden; border: 1px solid #e0e0e0; } .jannah-wcc-unit { padding: 0.35rem 0.6rem; font-size: 0.8rem; cursor: pointer; transition: all 0.2s ease; color: #7f8c8d; } .jannah-wcc-unit.active { background: #3498db; color: white; font-weight: 500; } /* Button Styling */ .jannah-wcc-button { width: 100%; padding: 0.9rem; background: #3498db; color: white; border: none; border-radius: 8px; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; font-family: 'Poppins', sans-serif; margin: 0.5rem 0 1rem; } .jannah-wcc-button:hover { background: #2980b9; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(41,128,185,0.3); } .jannah-wcc-button:active { transform: translateY(0); } /* Result Display */ .jannah-wcc-result { margin: 1rem 0; padding: 1rem; border-radius: 8px; background: #f8f9fa; text-align: center; font-size: 1.2rem; font-weight: 600; color: #2c3e50; height: 0; overflow: hidden; opacity: 0; transition: all 0.4s ease; } .jannah-wcc-result.show { height: auto; opacity: 1; border: 1px solid #e0e0e0; } .jannah-wcc-result.error { background-color: #fff5f5; color: #e74c3c; border-color: #ffd3d3; } /* Info Toggle */ .jannah-wcc-info-toggle { display: flex; align-items: center; justify-content: center; padding: 0.7rem; cursor: pointer; color: #3498db; font-size: 0.9rem; font-weight: 500; margin: 1rem 0 0; user-select: none; border-top: 1px solid #f0f0f0; } .jannah-wcc-chevron { position: relative; width: 12px; height: 12px; margin-left: 6px; } .jannah-wcc-chevron:before, .jannah-wcc-chevron:after { content: ''; position: absolute; background: #3498db; width: 8px; height: 2px; top: 5px; transition: all 0.3s ease; } .jannah-wcc-chevron:before { right: 5px; transform: rotate(45deg); } .jannah-wcc-chevron:after { right: 0; transform: rotate(-45deg); } .jannah-wcc-info-toggle.active .jannah-wcc-chevron:before { transform: rotate(-45deg); } .jannah-wcc-info-toggle.active .jannah-wcc-chevron:after { transform: rotate(45deg); } /* Info Section */ .jannah-wcc-info { height: 0; overflow: hidden; transition: all 0.5s ease; opacity: 0; margin-top: 0; } .jannah-wcc-info.show { height: auto; opacity: 1; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid #f0f0f0; } .jannah-wcc-formula { background: #f8f9fa; padding: 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.9rem; color: #34495e; text-align: center; } .jannah-wcc-limitations { font-size: 0.85rem; color: #7f8c8d; margin-bottom: 1rem; } .jannah-wcc-limitations ul { padding-left: 1.5rem; margin: 0.5rem 0; } .jannah-wcc-danger-levels { margin-top: 1rem; } .jannah-wcc-danger-scale { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; } .jannah-wcc-danger-item { flex: 1; min-width: 70px; padding: 0.5rem; border-radius: 6px; display: flex; flex-direction: column; align-items: center; text-align: center; } .jannah-wcc-danger-item span { font-weight: 500; font-size: 0.85rem; } .jannah-wcc-danger-item small { font-size: 0.7rem; opacity: 0.8; } /* Responsive Adjustments for Sidebar */ @media (max-width: 768px) { .jannah-wcc-container { padding: 0.5rem; } .jannah-wcc-card { padding: 1.25rem; } .jannah-wcc-danger-scale { flex-direction: column; } .jannah-wcc-danger-item { flex-direction: row; justify-content: space-between; } } /* Added styles for danger levels */ .jannah-wcc-result.safe { background-color: #e8f5e9; color: #2e7d32; border-color: #c8e6c9; } .jannah-wcc-result.caution { background-color: #fff8e1; color: #f57f17; border-color: #ffecb3; } .jannah-wcc-result.warning { background-color: #ffebee; color: #c62828; border-color: #ffcdd2; } .jannah-wcc-result.danger { background-color: #f3e5f5; color: #4a148c; border-color: #e1bee7; } // Unit variables let tempUnit = 'F'; let speedUnit = 'mph'; // Toggle info section document.addEventListener('DOMContentLoaded', function() { const infoToggle = document.getElementById('jannah-wcc-info-toggle'); const infoSection = document.getElementById('jannah-wcc-info'); const calculateBtn = document.getElementById('jannah-wcc-calculate'); // Toggle info section visibility infoToggle.addEventListener('click', function() { infoToggle.classList.toggle('active'); infoSection.classList.toggle('show'); }); // Calculate button click handler calculateBtn.addEventListener('click', calculateWindChill); // Add keyboard support document.getElementById('jannah-wcc-temperature').addEventListener('keypress', function(e) { if (e.key === 'Enter') calculateWindChill(); }); document.getElementById('jannah-wcc-wind-speed').addEventListener('keypress', function(e) { if (e.key === 'Enter') calculateWindChill(); }); }); // Switch temperature unit function switchTempUnit(unit) { const tempInput = document.getElementById('jannah-wcc-temperature'); const unitF = document.getElementById('temp-unit-f'); const unitC = document.getElementById('temp-unit-c'); if (unit === tempUnit) return; // Already selected let currentValue = parseFloat(tempInput.value); // Convert the value if there is one if (!isNaN(currentValue)) { if (unit === 'C') { // F to C tempInput.value = ((currentValue - 32) * 5/9).toFixed(1); } else { // C to F tempInput.value = ((currentValue * 9/5) + 32).toFixed(1); } } // Update active states unitF.classList.toggle('active', unit === 'F'); unitC.classList.toggle('active', unit === 'C'); tempUnit = unit; } // Switch wind speed unit function switchSpeedUnit(unit) { const speedInput = document.getElementById('jannah-wcc-wind-speed'); const unitMph = document.getElementById('speed-unit-mph'); const unitKph = document.getElementById('speed-unit-kph'); if (unit === speedUnit) return; // Already selected let currentValue = parseFloat(speedInput.value); // Convert the value if there is one if (!isNaN(currentValue)) { if (unit === 'kph') { // mph to kph speedInput.value = (currentValue * 1.60934).toFixed(1); } else { // kph to mph speedInput.value = (currentValue / 1.60934).toFixed(1); } } // Update active states unitMph.classList.toggle('active', unit === 'mph'); unitKph.classList.toggle('active', unit === 'kph'); speedUnit = unit; } // Calculate wind chill function calculateWindChill() { // Get input values let temp = parseFloat(document.getElementById('jannah-wcc-temperature').value); let windSpeed = parseFloat(document.getElementById('jannah-wcc-wind-speed').value); const resultDiv = document.getElementById('jannah-wcc-result'); // Input validation if (isNaN(temp) || isNaN(windSpeed)) { showResult('Please enter valid numbers for temperature and wind speed', true); return; } // Convert units if needed if (tempUnit === 'C') { temp = (temp * 9/5) + 32; // Convert C to F for calculation } if (speedUnit === 'kph') { windSpeed = windSpeed / 1.60934; // Convert kph to mph for calculation } // Check if within valid range for formula if (temp > 50 || windSpeed < 3) { showResult(`Formula only valid for temperatures ≤50°F (10°C) and wind speeds ≥3mph (4.8km/h)`, true); return; } // Calculate wind chill using the NWS formula const windChill = 35.74 + (0.6215 * temp) - (35.75 * Math.pow(windSpeed, 0.16)) + (0.4275 * temp * Math.pow(windSpeed, 0.16)); // Format result based on user's selected unit let formattedWindChill; if (tempUnit === 'C') { // Convert result back to Celsius const windChillCelsius = (windChill - 32) * 5/9; formattedWindChill = `${windChillCelsius.toFixed(1)}°C`; } else { formattedWindChill = `${windChill.toFixed(1)}°F`; } // Show result with danger level const dangerClass = getWindChillDangerClass(windChill); showResult(`Feels like: ${formattedWindChill}`, false, dangerClass); } // Determine danger level class based on wind chill temperature function getWindChillDangerClass(windChill) { if (windChill > 30) return 'safe'; if (windChill > 15) return 'caution'; if (windChill > 0) return 'warning'; return 'danger'; } // Display result function showResult(message, isError = false, dangerClass = '') { const resultDiv = document.getElementById('jannah-wcc-result'); resultDiv.textContent = message; resultDiv.classList.remove('show', 'error', 'safe', 'caution', 'warning', 'danger'); // Set error styling if applicable if (isError) { resultDiv.classList.add('error'); } else if (dangerClass) { resultDiv.classList.add(dangerClass); } // Show result with animation setTimeout(() => resultDiv.classList.add('show'), 50); // Add color indication based on danger level if (dangerClass === 'safe') { resultDiv.style.background = '#e8f5e9'; resultDiv.style.color = '#2e7d32'; resultDiv.style.borderColor = '#c8e6c9'; } else if (dangerClass === 'caution') { resultDiv.style.background = '#fff8e1'; resultDiv.style.color = '#f57f17'; resultDiv.style.borderColor = '#ffecb3'; } else if (dangerClass === 'warning') { resultDiv.style.background = '#ffebee'; resultDiv.style.color = '#c62828'; resultDiv.style.borderColor = '#ffcdd2'; } else if (dangerClass === 'danger') { resultDiv.style.background = '#f3e5f5'; resultDiv.style.color = '#4a148c'; resultDiv.style.borderColor = '#e1bee7'; } else if (!isError) { resultDiv.style.background = '#f8f9fa'; resultDiv.style.color = '#2c3e50'; resultDiv.style.borderColor = '#e0e0e0'; } }

Rocky Islam