๐ฅExpiry Date Calculator
Professional Expiry Date Calculator for food safety, shelf life tracking, inventory management, and meal planning. Perfect for households, restaurants, and businesses.
๐ค What Is Expiry Date Calculator?
Think of a time-traveling assistant for your pantry - that's the Expiry Date Calculator! Calculate expiration dates, track shelf life, and manage food safety periods professionally for inventory management and meal planning. Keep your food fresh and your family safe with AI-powered date tracking!
Calculate Expiry Date
Calculate expiration dates based on production date and shelf life information.
Your expiry date calculation will appear here
Check Expiry Status
Check if a product is still safe to use and how much time remains before expiry.
Your expiry status will appear here
Batch Tracker
Track multiple products and get expiry alerts for inventory management.
Tracked Items
No items tracked yet
Food Safety Guide
Essential information about food safety, storage, and expiry date understanding.
Understanding Expiry Labels
Best Before: Quality may decline but generally safe to consume
Use By: Important for safety - do not use after this date
Sell By: For retailers - consumers can use past this date
Freeze By: Freeze before this date for extended storage
Use By: Important for safety - do not use after this date
Sell By: For retailers - consumers can use past this date
Freeze By: Freeze before this date for extended storage
Storage Temperature Guide
Refrigerator: 0-4ยฐC (32-39ยฐF)
Freezer: -18ยฐC (0ยฐF) or below
Pantry: Cool, dry place 10-21ยฐC (50-70ยฐF)
Room Temperature: 20-25ยฐC (68-77ยฐF)
Freezer: -18ยฐC (0ยฐF) or below
Pantry: Cool, dry place 10-21ยฐC (50-70ยฐF)
Room Temperature: 20-25ยฐC (68-77ยฐF)
Signs of Spoilage
Visual: Mold, discoloration, unusual appearance
Smell: Off odors, sour or rancid smells
Texture: Slimy, sticky, or unusual texture
Taste: If in doubt, don't taste - when in doubt, throw it out
Smell: Off odors, sour or rancid smells
Texture: Slimy, sticky, or unusual texture
Taste: If in doubt, don't taste - when in doubt, throw it out
Quick Presets & Examples
Fresh Milk
5-7 days refrigerated
Fresh Bread
3-5 days room temp
Medicine
Check specific expiry
Canned Goods
2-5 years shelf stable
Storage Scenarios
${results.scenarios.map(scenario =>
`${scenario.condition}: ${formatDate(scenario.date)}
` ).join('')}
` ).join('')}
Expires: ${results.expiryDate}
Status: ${results.freshnessStatus.status}
Store in ${results.storageConditions} conditions for optimal freshness
`;
// Start countdown timer
startCountdown(results.daysRemaining);
}
function startCountdown(daysRemaining) {
const countdownElement = document.getElementById('countdownDisplay');
if (!countdownElement) return;
if (daysRemaining < 0) {
countdownElement.innerHTML = `
Status: ${results.freshnessStatus.status}
Store in ${results.storageConditions} conditions for optimal freshness
Product has expired
`;
return;
}
const years = Math.floor(daysRemaining / 365);
const months = Math.floor((daysRemaining % 365) / 30);
const days = daysRemaining % 30;
const hours = 24; // Assuming full days
countdownElement.innerHTML = `
${years}
Years
${months}
Months
${days}
Days
${hours}
Hours
${results.daysRemaining >= 0 ? `${results.daysRemaining} Days` : 'Expired'}
${results.freshnessStatus.status}
Product Name
${results.productName}
Expiry Date
${results.expiryDate}
Status
${results.freshnessStatus.status}
Freshness
${results.percentageRemaining}%
Status & Recommendations
Status: ${statusMessage}
Recommendation: ${recommendations}
Recommendation: ${recommendations}
Product: ${results.productName}
Expires: ${results.expiryDate}
Always check for signs of spoilage before consumption
`;
// Start countdown if not expired
if (results.daysRemaining >= 0) {
startCountdown(results.daysRemaining);
}
}
// ========== BATCH TRACKER ==========
function addToBatch() {
const itemName = document.getElementById('batchItemName').value.trim();
const batchNumber = document.getElementById('batchNumber').value.trim();
const expiryDate = document.getElementById('batchExpiryDate').value;
const quantity = parseInt(document.getElementById('batchQuantity').value) || 1;
if (!itemName || !expiryDate) {
showError('Please fill in item name and expiry date');
return;
}
const newItem = {
id: Date.now(),
itemName,
batchNumber,
expiryDate,
quantity,
addedDate: new Date().toISOString()
};
batchItems.push(newItem);
localStorage.setItem('batchItems', JSON.stringify(batchItems));
// Clear form
document.getElementById('batchItemName').value = '';
document.getElementById('batchNumber').value = '';
document.getElementById('batchExpiryDate').value = '';
document.getElementById('batchQuantity').value = '1';
updateBatchDisplay();
showNotification('Item added to tracker!', 'success');
trackEvent('batch_item_added', { type: 'tracker' });
}
function updateBatchDisplay() {
const container = document.getElementById('batchItems');
if (batchItems.length === 0) {
container.innerHTML = 'Expires: ${results.expiryDate}
Always check for signs of spoilage before consumption
No items tracked yet
'; return; } // Sort by expiry date (soonest first) const sortedItems = [...batchItems].sort((a, b) => new Date(a.expiryDate) - new Date(b.expiryDate)); container.innerHTML = sortedItems.map(item => { const expiryDate = new Date(item.expiryDate); const today = new Date(); const daysRemaining = calculateDaysDifference(today, expiryDate); const freshnessStatus = getFreshnessStatus(daysRemaining); return `
${item.itemName}
${freshnessStatus.status}
${item.batchNumber ? `Batch: ${item.batchNumber} | ` : ''}Qty: ${item.quantity}
Expires: ${formatDate(expiryDate)} (${daysRemaining >= 0 ? daysRemaining + ' days' : 'Expired'})
${content.replace(/\n/g, '
')}`; } chatMessages.appendChild(messageDiv); chatMessages.scrollTop = chatMessages.scrollHeight; } // Gemini์ ๋ฉ์์ง ์ ์ก async function sendToGemini() { const input = document.getElementById('geminiInput'); const message = input.value.trim(); if (!message) return; // ์ฌ์ฉ์ ๋ฉ์์ง ์ถ๊ฐ addMessage('user', message); input.value = ''; // ๋ก๋ฉ ํ์ const loadingMsg = document.createElement('div'); loadingMsg.className = 'message assistant'; loadingMsg.innerHTML = 'Gemini:
Thinking...'; loadingMsg.id = 'loading-message'; document.getElementById('chatMessages').appendChild(loadingMsg); try { const response = await fetch(`https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key=${aiModalState.apiKey}`, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ contents: [{ parts: [{ text: `Context: User is using Expiry Date Calculator tool on WIA Pin Code platform. This tool calculates expiry dates, checks food safety, and tracks product freshness. Current tab: ${currentTab} User question: ${message}` }] }], generationConfig: { temperature: 0.7, maxOutputTokens: 1000 } }) }); const data = await response.json(); // ๋ก๋ฉ ๋ฉ์์ง ์ ๊ฑฐ 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) { // ๋ก๋ฉ ๋ฉ์์ง ์ ๊ฑฐ 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() { // Set today's date as default for production date const today = new Date().toISOString().split('T')[0]; document.getElementById('productionDate').value = today; // Initialize batch display updateBatchDisplay(); // 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 ๋ฒํผ ์ด๋ฒคํธ document.getElementById('aiBtn').addEventListener('click', openAIModal); // ๋ชจ๋ฌ ์ธ๋ถ ํด๋ฆญ์ ๋ซ๊ธฐ document.getElementById('aiModal').addEventListener('click', function(e) { if (e.target === this) { closeAIModal(); } }); // ์ํฐ ํค ์ง์ ๋ฐ ESC ํค๋ก ๋ชจ๋ฌ ๋ซ๊ธฐ document.addEventListener('keydown', function(e) { if (e.key === 'Enter') { const geminiInput = document.getElementById('geminiInput'); if (document.activeElement === geminiInput) { sendToGemini(); } } // ESC ํค๋ก ๋ชจ๋ฌ ๋ซ๊ธฐ if (e.key === 'Escape') { closeAIModal(); } }); // ์ด๊ธฐ API ํค ์ํ ์ ๋ฐ์ดํธ 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 });