💻Download Time Calculator

Professional Download Time Calculator for file transfers, internet speed analysis, bandwidth planning, and upload time estimation. Perfect for streaming, gaming, and data management.

🤔 What Is a Download Time Calculator?

Think of a crystal ball for file transfers - that's our download time calculator! It tells you exactly how long that game, movie, or software will take to download based on your internet speed. Plan your downloads and know if you should start before bed or before work!

⬇️ Download Time Calculator

Calculate how long it takes to download files based on internet speed and file size.

File Size

File Size Unit

Download Speed

Speed Unit

⏱️ Your download time results will appear here

⬆️ Upload Time Calculator

Calculate upload time for file transfers, cloud backups, and streaming.

File Size

File Size Unit

Upload Speed

Speed Unit

⏱️ Your upload time results will appear here

📊 Bandwidth Requirements Calculator

Calculate required bandwidth for streaming, gaming, and multiple device usage.

Activity Type

Number of Users/Devices

Peak Usage Hours

Required Speed per Device (Mbps)

📡 Your bandwidth requirements will appear here

🚀 Internet Speed Information

Test your actual internet speed and understand connection quality.

Test Your Real Speed

Use these reliable speed test services to measure your actual download and upload speeds.

Netflix Fast.com Speedtest.net Cloudflare Speed

Understanding Internet Speeds

1-5 Mbps: Basic web browsing, email

5-25 Mbps: HD video streaming, light gaming

25-100 Mbps: 4K streaming, multiple devices

100+ Mbps: Heavy usage, large file transfers

Quick Presets & Examples

Movie Download

4GB movie at 100 Mbps

Game Download

50GB game at 50 Mbps

Photo Upload

100MB photos at 25 Mbps

Cloud Backup

1TB backup at 10 Mbps

Download Time Scenarios

${results.scenarios.map(scenario => `${scenario.name}: ${formatTime(scenario.time)}
` ).join('')}

File: ${results.fileSize} ${results.fileSizeUnit}
Speed: ${results.downloadSpeed} ${results.speedUnit}
Note: Real-world speeds may vary due to network conditions

`; } // ========== UPLOAD TIME CALCULATOR ========== function calculateUploadTime() { const fileSize = parseFloat(document.getElementById('uploadFileSize').value); const fileSizeUnit = document.getElementById('uploadFileSizeUnit').value; const uploadSpeed = parseFloat(document.getElementById('uploadSpeed').value); const speedUnit = document.getElementById('uploadSpeedUnit').value; if (!fileSize || !uploadSpeed) { showError('Please fill in all fields for upload time calculation'); return; } // Convert file size to bytes const fileSizeBytes = convertToBytes(fileSize, fileSizeUnit); // Convert speed to bits per second const speedBps = convertToBitsPerSecond(uploadSpeed, speedUnit); // Convert file size to bits (multiply by 8) const fileSizeBits = fileSizeBytes * 8; // Calculate time in seconds const timeSeconds = fileSizeBits / speedBps; // Convert speed to Mbps for display const speedMbps = speedBps / 1000000; const speedInfo = getSpeedCategory(speedMbps); // Calculate upload efficiency (uploads are typically slower) const scenarios = [ { name: 'Ideal Upload', multiplier: 1, time: timeSeconds }, { name: 'Typical Upload', multiplier: 1.3, time: timeSeconds * 1.3 }, { name: 'Peak Hours', multiplier: 1.8, time: timeSeconds * 1.8 }, { name: 'Slow Server', multiplier: 2.5, time: timeSeconds * 2.5 } ]; displayUploadResults({ fileSize, fileSizeUnit, uploadSpeed, speedUnit, timeSeconds, speedMbps: speedMbps.toFixed(1), speedInfo, scenarios }); showOTA(); trackEvent('upload_calculated', { type: 'upload' }); } function displayUploadResults(results) { const container = document.getElementById('uploadResults'); container.innerHTML = `

${formatTime(results.timeSeconds)} ${results.speedInfo.category}

File Size

${results.fileSize} ${results.fileSizeUnit}

Upload Speed

${results.uploadSpeed} ${results.speedUnit}

Effective Speed

${results.speedMbps} Mbps

Connection Quality

${results.speedInfo.category}

Upload Time Scenarios

${results.scenarios.map(scenario => `${scenario.name}: ${formatTime(scenario.time)}
` ).join('')}

File: ${results.fileSize} ${results.fileSizeUnit}
Speed: ${results.uploadSpeed} ${results.speedUnit}
Note: Upload speeds are typically slower than download speeds

`; } // ========== BANDWIDTH CALCULATOR ========== function updateBandwidthRecommendations() { const activityType = document.getElementById('activityType').value; const speedPerDeviceInput = document.getElementById('speedPerDevice'); const recommendations = { 'streaming_hd': 5, 'streaming_4k': 25, 'gaming': 15, 'video_call': 8, 'web_browsing': 2, 'custom': parseFloat(speedPerDeviceInput.value) || 25 }; if (activityType !== 'custom') { speedPerDeviceInput.value = recommendations[activityType]; } } function calculateBandwidth() { const numDevices = parseInt(document.getElementById('numDevices').value); const peakHours = parseInt(document.getElementById('peakHours').value); const speedPerDevice = parseFloat(document.getElementById('speedPerDevice').value); const activityType = document.getElementById('activityType').value; if (!numDevices || !peakHours || !speedPerDevice) { showError('Please fill in all fields for bandwidth calculation'); return; } // Calculate total bandwidth needed const totalBandwidth = numDevices * speedPerDevice; // Calculate with overhead (20% extra for peak usage) const recommendedBandwidth = totalBandwidth * 1.2; // Calculate data usage per day/month const dailyUsageGB = (totalBandwidth * peakHours * 3600) / (8 * 1024 * 1024 * 1024); const monthlyUsageGB = dailyUsageGB * 30; // Performance categories let performanceCategory = 'Good'; let categoryClass = 'speed-good'; if (recommendedBandwidth >= 100) { performanceCategory = 'Excellent'; categoryClass = 'speed-excellent'; } else if (recommendedBandwidth >= 50) { performanceCategory = 'Good'; categoryClass = 'speed-good'; } else if (recommendedBandwidth >= 25) { performanceCategory = 'Fair'; categoryClass = 'speed-fair'; } else { performanceCategory = 'Basic'; categoryClass = 'speed-slow'; } displayBandwidthResults({ numDevices, peakHours, speedPerDevice, totalBandwidth: totalBandwidth.toFixed(1), recommendedBandwidth: recommendedBandwidth.toFixed(1), dailyUsageGB: dailyUsageGB.toFixed(1), monthlyUsageGB: monthlyUsageGB.toFixed(0), performanceCategory, categoryClass, activityType }); showOTA(); trackEvent('bandwidth_calculated', { type: 'bandwidth' }); } function displayBandwidthResults(results) { const container = document.getElementById('bandwidthResults'); const activityNames = { 'streaming_hd': 'HD Video Streaming', 'streaming_4k': '4K Video Streaming', 'gaming': 'Online Gaming', 'video_call': 'Video Conferencing', 'web_browsing': 'Web Browsing', 'custom': 'Custom Activity' }; container.innerHTML = `

${results.recommendedBandwidth} Mbps ${results.performanceCategory}

Minimum Required

${results.totalBandwidth} Mbps

Recommended

${results.recommendedBandwidth} Mbps

Daily Usage

${results.dailyUsageGB} GB

Monthly Usage

${results.monthlyUsageGB} GB

Bandwidth Breakdown

Devices: ${results.numDevices}
Activity: ${activityNames[results.activityType] || 'Custom'}
Speed per device: ${results.speedPerDevice} Mbps
Peak usage hours: ${results.peakHours} hours/day
Overhead included: 20% for optimal performance

Total bandwidth: ${results.totalBandwidth} Mbps minimum
Recommended: ${results.recommendedBandwidth} Mbps
Performance level: ${results.performanceCategory}

`; } // ========== SAMPLE USAGE FUNCTIONS ========== function useSample(sampleId) { const samples = { 'movie-download': { tab: 'download', data: { fileSize: 4, fileSizeUnit: 'GB', downloadSpeed: 100, speedUnit: 'Mbps' } }, 'game-download': { tab: 'download', data: { fileSize: 50, fileSizeUnit: 'GB', downloadSpeed: 50, speedUnit: 'Mbps' } }, 'photo-upload': { tab: 'upload', data: { uploadFileSize: 100, uploadFileSizeUnit: 'MB', uploadSpeed: 25, speedUnit: 'Mbps' } }, 'backup-upload': { tab: 'upload', data: { uploadFileSize: 1, uploadFileSizeUnit: 'TB', uploadSpeed: 10, speedUnit: 'Mbps' } } }; const sample = samples[sampleId]; if (!sample) return; // Switch to appropriate tab switchTab(sample.tab); // Fill in the data Object.keys(sample.data).forEach(key => { const element = document.getElementById(key); if (element) { element.value = sample.data[key]; } }); // Highlight the calculate button setTimeout(() => { const activeTab = document.querySelector('.tab-content.active'); const activeButton = activeTab.querySelector('.btn'); if (activeButton) { activeButton.style.animation = 'pulse 0.5s ease-in-out'; setTimeout(() => activeButton.style.animation = '', 500); activeButton.scrollIntoView({ behavior: 'smooth', block: 'center' }); } }, 100); } // ========== UTILITY FUNCTIONS ========== // Copy to clipboard function copyToClipboard(text) { navigator.clipboard.writeText(text).then(() => { showNotification('Copied to clipboard!', 'success'); }).catch(() => { // Fallback for older browsers const textArea = document.createElement('textarea'); textArea.value = text; document.body.appendChild(textArea); textArea.select(); document.execCommand('copy'); document.body.removeChild(textArea); showNotification('Copied to clipboard!', 'success'); }); } // Show error function showError(message) { showNotification(message, 'error'); } // Show notification toast function showNotification(message, type = 'success') { const toast = document.createElement('div'); toast.className = `toast ${type}`; toast.textContent = message; document.body.appendChild(toast); setTimeout(() => { toast.remove(); }, 3000); } // Show OTA section (dynamic) function showOTA() { const otaContainer = document.getElementById('otaContainer'); if (otaContainer && (otaContainer.style.display === 'none' || !otaContainer.style.display)) { otaContainer.style.display = 'block'; // Attention-grabbing pulse effect setTimeout(() => { const otaHeader = document.querySelector('.ota-header h3'); if (otaHeader) { otaHeader.style.animation = 'pulse 1s ease-in-out'; } }, 100); } } // Analytics tracking function trackEvent(eventName, data = {}) { if (typeof gtag !== 'undefined') { gtag('event', eventName, { 'event_category': TOOL_CONFIG.category, 'event_label': TOOL_CONFIG.name, ...data }); } } // ========== AI ASSISTANT FUNCTIONS ========== // AI 모달 열기 function openAIModal() { const modal = document.getElementById('aiModal'); if(modal) modal.classList.add('show'); // 현재 상태에 따라 적절한 화면 표시 if (aiModalState.apiKey && aiModalState.currentView === 'gemini') { showGeminiChat(); } else { showAISelector(); } updateAPIKeyStatus(); } // AI 모달 닫기 function closeAIModal() { const modal = document.getElementById('aiModal'); if(modal) modal.classList.remove('show'); // 300ms 후 상태 리셋 (애니메이션 완료 후) setTimeout(() => { aiModalState.currentView = 'selector'; showAISelector(); }, 300); } // AI 선택 화면 표시 function showAISelector() { document.getElementById('aiModalTitle').textContent = 'Choose Your AI Assistant'; document.getElementById('aiSelector').style.display = 'flex'; document.getElementById('geminiChat').style.display = 'none'; document.getElementById('apiKeySetup').style.display = 'none'; aiModalState.currentView = 'selector'; } // Gemini 채팅 화면 표시 function showGeminiChat() { document.getElementById('aiModalTitle').innerHTML = '✨ Gemini AI Assistant'; document.getElementById('aiSelector').style.display = 'none'; document.getElementById('geminiChat').style.display = 'flex'; document.getElementById('apiKeySetup').style.display = 'none'; aiModalState.currentView = 'gemini'; // 초기 메시지가 없으면 추가 const chatMessages = document.getElementById('chatMessages'); if (!chatMessages.innerHTML.trim()) { addMessage('assistant', `Hello! I can help you with download and upload calculations: • Understanding internet speeds and file transfer times • Bandwidth planning for multiple devices • Optimizing your connection for streaming or gaming • Troubleshooting slow transfer speeds What would you like to know?`); } } // API 키 설정 화면 표시 function showAPIKeySetup() { document.getElementById('aiModalTitle').textContent = 'Setup Gemini API'; document.getElementById('aiSelector').style.display = 'none'; document.getElementById('geminiChat').style.display = 'none'; document.getElementById('apiKeySetup').style.display = 'block'; aiModalState.currentView = 'setup'; } // AI 선택 처리 function selectAI(aiType) { switch(aiType) { case 'chatgpt': const toolContext = `I need help with download time calculations. This is a Download Time Calculator tool for file transfers, bandwidth planning on WIA Pin Code platform.`; const chatUrl = `https://chat.openai.com/?q=${encodeURIComponent(toolContext)}`; window.open(chatUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'chatgpt' }); break; case 'claude': const claudeContext = `I need help with download time calculations. This is a Download Time Calculator tool for file transfers, bandwidth planning on WIA Pin Code platform.`; const claudeUrl = `https://claude.ai/chat?q=${encodeURIComponent(claudeContext)}`; window.open(claudeUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'claude' }); break; case 'gemini': if (!aiModalState.apiKey) { showAPIKeySetup(); } else { showGeminiChat(); } trackEvent('ai_selection', { ai_type: 'gemini' }); break; } } // API 키 저장 function saveGeminiApiKey() { const apiKey = document.getElementById('geminiApiKeyInput').value.trim(); if (apiKey) { localStorage.setItem('geminiApiKey', apiKey); aiModalState.apiKey = apiKey; showGeminiChat(); updateAPIKeyStatus(); } else { alert('Please enter a valid API key'); } } // API 키 상태 업데이트 function updateAPIKeyStatus() { const statusEl = document.getElementById('apiKeyStatus'); if (aiModalState.apiKey) { statusEl.innerHTML = 'Change API Key'; } else { statusEl.textContent = 'No API key set'; } } // 채팅 메시지 추가 function addMessage(type, content) { const chatMessages = document.getElementById('chatMessages'); const messageDiv = document.createElement('div'); messageDiv.className = `message ${type}`; if (type === 'user') { messageDiv.innerHTML = `You: ${content}`; } else { messageDiv.innerHTML = `Gemini:
${content.replace(/\n/g, '
')}`; } chatMessages.appendChild(messageDiv); chatMessages.scrollTop = chatMessages.scrollHeight; } // Gemini에 메시지 전송 async function sendToGemini() { const input = document.getElementById('geminiInput'); const message = input.value.trim(); if (!message) return; // 사용자 메시지 추가 addMessage('user', message); input.value = ''; // 로딩 표시 const loadingMsg = document.createElement('div'); loadingMsg.className = 'message assistant'; loadingMsg.innerHTML = 'Gemini:
Thinking...'; loadingMsg.id = 'loading-message'; document.getElementById('chatMessages').appendChild(loadingMsg); try { const response = await fetch(`https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key=${aiModalState.apiKey}`, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ contents: [{ parts: [{ text: `Context: User is using Download Time Calculator tool on WIA Pin Code platform. This tool calculates download times, upload times, and bandwidth requirements. Current tab: ${currentTab} User question: ${message}` }] }], generationConfig: { temperature: 0.7, maxOutputTokens: 1000 } }) }); const data = await response.json(); // 로딩 메시지 제거 document.getElementById('loading-message').remove(); if (data.candidates && data.candidates[0] && data.candidates[0].content) { const reply = data.candidates[0].content.parts[0].text; addMessage('assistant', reply); } else { addMessage('assistant', 'Sorry, I could not generate a response. Please try again.'); } } catch (error) { // 로딩 메시지 제거 document.getElementById('loading-message')?.remove(); if (error.message.includes('API key')) { addMessage('error', 'Invalid API key. Please check your API key and try again.'); showAPIKeySetup(); } else { addMessage('error', 'Failed to connect to Gemini. Please check your internet connection and try again.'); } } } // ========== EVENT LISTENERS ========== document.addEventListener('DOMContentLoaded', function() { // Enter key support for inputs document.querySelectorAll('.input-field').forEach(input => { input.addEventListener('keypress', function(e) { if (e.key === 'Enter') { // Find the calculate button in the current active tab const activeTab = document.querySelector('.tab-content.active'); const calculateBtn = activeTab.querySelector('.btn'); if (calculateBtn) { calculateBtn.click(); } } }); }); // AI 버튼 이벤트 document.getElementById('aiBtn').addEventListener('click', openAIModal); // 모달 외부 클릭시 닫기 document.getElementById('aiModal').addEventListener('click', function(e) { if (e.target === this) { closeAIModal(); } }); // 엔터 키 지원 및 ESC 키로 모달 닫기 document.addEventListener('keydown', function(e) { if (e.key === 'Enter') { const geminiInput = document.getElementById('geminiInput'); if (document.activeElement === geminiInput) { sendToGemini(); } } // ESC 키로 모달 닫기 if (e.key === 'Escape') { closeAIModal(); } }); // 초기 API 키 상태 업데이트 updateAPIKeyStatus(); updateCurrentYear(); updateToolCount(); }); // Track WIA Pin Code clicks for analytics document.querySelectorAll('a[href*="wia"]').forEach(link => { link.addEventListener('click', function() { trackEvent('wia_link_click', { link: link.textContent }); }); }); // ========== DYNAMIC TOOL COUNT ========== // Update tool count dynamically async function updateToolCount() { try { const response = await fetch('/api/tool-count.php'); const data = await response.json(); // Update dynamic tools description document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${data.count}+ free online tools in 211 languages. No signup, no fees, just tools that work.`; }); // Update "All X+ Tools" links document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${data.count}+ ${suffix}`; }); } catch (error) { // Fallback: use current actual count from server const fallbackCount = 333; document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${fallbackCount}+ free online tools in 211 languages. No signup, no fees, just tools that work.`; }); document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${fallbackCount}+ ${suffix}`; }); console.log('Tool count API not available, using current count:', fallbackCount); } } // Update current year dynamically function updateCurrentYear() { const currentYear = new Date().getFullYear(); document.querySelectorAll('.current-year').forEach(el => { el.textContent = currentYear; }); } // ========== ANALYTICS ========== // Google Analytics window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-XXXXXXXXX'); // Track page view trackEvent('page_view', { tool: TOOL_CONFIG.name, category: TOOL_CONFIG.category });