Engine Horsepower Calculator

Estimate your vehicle’s engine power with our responsive horsepower calculator. Enter your vehicle weight and quarter-mile time to instantly convert to horsepower and watts. /* Calculator Container */ .hp-calculator { max-width: 700px; margin: 2rem auto; padding: 2rem; background: #ffffff; border-radius: 10px; box-shadow: 0 0 20px rgba(0,0,0,0.1); font-family: inherit; } /* Calculator Title */ .hp-title { font-size: 1.8em; margin-bottom: 1.5rem; color: #333; text-align: center; } /* Input Group Styling */ .hp-input-group { margin-bottom: 1.5rem; display: grid; grid-template-columns: 1fr 2fr; gap: 1rem; align-items: center; } .hp-input-group label { font-weight: 600; color: #555; } .hp-input-group input, .hp-input-group select { padding: 0.3rem; border: 1px solid #ddd; border-radius: 5px; font-size: 1rem; transition: all 0.3s ease; } .hp-input-group input:focus, .hp-input-group select:focus { border-color: #0073aa; outline: none; } /* Button Styling */ .hp-button-group { display: flex; gap: 1rem; margin-top: 1rem; } .hp-calculate-btn, .hp-reset-btn { flex: 1; padding: 1rem; border: none; border-radius: 5px; font-size: 1.1rem; cursor: pointer; transition: all 0.3s ease; } .hp-calculate-btn { background: #0073aa; color: white; } .hp-calculate-btn:hover { background: #005177; } .hp-reset-btn { background: #6c757d; color: white; } .hp-reset-btn:hover { background: #5a6268; } /* Result Display */ .hp-result { margin-top: 1.5rem; padding: 1.5rem; background: #f8f9fa; border-radius: 5px; display: none; } .result-header { font-size: 1.2em; font-weight: bold; margin-bottom: 0.5rem; color: #0073aa; } .result-content { margin: 0.5rem 0; } /* Unit Converter */ .unit-converter { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; } .unit-toggle { display: flex; gap: 0.5rem; } .unit-btn { padding: 0.5rem 1rem; border: 1px solid #ddd; border-radius: 5px; cursor: pointer; background: #f8f9fa; } .unit-btn.active { background: #0073aa; color: white; border-color: #0073aa; } /* Responsive Design */ @media (max-width: 480px) { .hp-input-group { grid-template-columns: 1fr; } .hp-button-group { flex-direction: column; } .hp-calculator { padding: 1rem; margin: 1rem; } } .error { color: #dc3545; text-align: center; margin-top: 1rem; display: none; } .formula-note { margin-top: 1rem; font-size: 0.9em; color: #666; text-align: center; } Calculation Type: HP from Torque Torque from HP Torque: lb-ft Nm RPM: Horsepower: RPM: Calculate Reset Please enter valid positive numbers! Standard Formula: HP = (Torque × RPM) / 5252 | Torque (lb-ft) = (HP × 5252) / RPM let currentCalculationType = 'hp'; function toggleCalculationType(type) { currentCalculationType = type; document.querySelectorAll('.unit-btn').forEach(btn => btn.classList.remove('active')); document.getElementById('hp-calc').style.display = type === 'hp' ? 'block' : 'none'; document.getElementById('torque-calc').style.display = type === 'torque' ? 'block' : 'none'; event.target.classList.add('active'); resetCalculator(); } function convertTorqueUnit() { const torqueInput = document.getElementById('torque'); const unit = document.getElementById('torque-unit').value; if (unit === 'nm' && torqueInput.value) { torqueInput.value = (parseFloat(torqueInput.value) / 1.35582).toFixed(2); } else if (unit === 'lb-ft' && torqueInput.value) { torqueInput.value = (parseFloat(torqueInput.value) * 1.35582).toFixed(2); } } function calculatePower() { const resultDiv = document.getElementById('result'); const errorDiv = document.getElementById('error'); let result, formula; if (currentCalculationType === 'hp') { const torque = parseFloat(document.getElementById('torque').value); const rpm = parseFloat(document.getElementById('rpm').value); const unit = document.getElementById('torque-unit').value; if (isNaN(torque) || isNaN(rpm) || torque

Rocky Islam