How to Track Travel Expenses Across Multiple Currencies

You're sitting at a restaurant in Lisbon. The bill is €38. But you're from the US, so you mentally calculate: that's about $41. Then you hop a train to Porto (€25), fly to Marrakech (420 MAD), and suddenly you have no idea how much you've actually spent this week.  This is the multi-currency expense tracking problem, and every international traveler has faced it. Here's how to solve it.  The Spreadsheet Approach (and Why It Fails)  Many travelers start by logging expenses in a Notes app or spreadsheet. It works for about two days. Then you forget to log a meal, lose track of which currency that taxi was in, and abandon the whole system. Spreadsheets also can't do live currency conversion, so you're left guessing or Googling exchange rates after the fact.  The Dedicated App Approach  The better solution is a dedicated travel expense app that handles multi-currency automatically. Here's what to look for:  1. Live exchange rates (not static ones baked in at download time) 2. City or country tagging so you can see spending by destination 3. Category breakdowns (food, transport, lodging, activities) 4. Offline support — because WiFi in hostels and remote areas is unreliable 5. A home currency conversion so you always know the real total  Popular options include TravelSpend, Trail Wallet (iOS only, no longer maintained), and Tricount (more for group splitting).  We built Spentri specifically for this problem. It supports 16 currencies with live exchange rates, converts everything to your home currency automatically, and breaks down spending by city so you can see exactly how much Tokyo cost versus Kyoto.  The Photo Method  Here's a travel hack most people miss: take a photo with every expense. Not for receipts (though that helps) — but because photos turn expense data into memories. That ¥8,500 entry means nothing six months later. But if there's a photo of you at Sushi Dai in Tsukiji attached to it, it becomes a moment you'll want to revisit.  End-of-Trip Review  The real value of tracking expenses isn't knowing your total — it's the story the data tells. Which city was cheapest? Where did you splurge? What was your average daily spend? These insights help you budget better for future trips and give you fun stats to share.  Spentri generates this automatically as an AI-powered trip narrative. But even if you use a spreadsheet, take 30 minutes after your trip to review the numbers. You'll be surprised what you learn.  The Bottom Line  Track in real-time (not after the trip), use an app that handles currency conversion, attach photos to expenses, and review the data when you're home. Your future traveling self will thank you.