How Much Yen Should You Exchange for a Japan Trip?

Standing at the exchange counter, the teller asks: 'How much would you like?' Most travelers pause. Thirty thousand yen? Fifty? They either guess based on nothing or quietly watch what the person ahead of them exchanged. There's a better way to arrive at that number.

Japan Still Runs on Cash More Than You'd Expect

Card acceptance has expanded in Japan, but cash-only situations come up constantly: older neighborhood restaurants, shrine and temple entry fees, some vending machines, coin lockers, public baths, and street market stalls. Even in Tokyo and Osaka, you'll hit cash-only spots several times a day if you're exploring beyond the major tourist corridors.

Even if you plan to pay by card for most things, you still need a working cash buffer. The problem is that 'buffer' doesn't give you a number — and neither does 'a week in Japan usually costs around X.'

Why You Don't Know How Much to Exchange

The exchange amount is unclear because the expected spend is unclear. And the expected spend is unclear because the itinerary isn't finalized. Once you know which restaurants you're going to, which paid attractions are in your plan, and roughly how much you're allocating to shopping, you can back-calculate a reasonable cash figure.

Know your expected spend first, and the exchange amount follows. Itinerary first, exchange second.

This is why 'how much yen for a 5-day Japan trip?' gets completely different answers from different people — the honest answer is: it depends on what you're doing. The question to answer isn't 'how long are you going?' but 'what's your day-by-day plan?'

Where to Exchange: A Quick Comparison

Bank exchanges (before departure) generally offer the best rates, especially if you use an online exchange reservation. Airport exchange kiosks are convenient but consistently apply the worst rates — use them only for small emergency amounts. In Japan, 7-Eleven ATMs (Seven Bank) and AEON ATMs accept most international cards for yen withdrawals, though fees apply.

The practical approach: exchange most of what you need before departure at a bank, keep a small emergency reserve strategy for in-Japan ATMs, and avoid exchanging large sums at the airport.

A Realistic Calculation Method

Once your itinerary is set, the math is straightforward. Estimate your daily cash spend (food + local transport + entry fees for cash-only venues), multiply by your number of days, then add 15–20% as a buffer for unplanned spending. Keep your shopping budget as a separate line — it's too variable to bake into a daily average.

The exchange amount question is ultimately a budget question, and the budget question is ultimately an itinerary question. Once you know where you're going and what you're doing each day, the cash figure becomes a calculation rather than a guess.