Exchange in Japan or Thailand? Rate Comparison
Should you convert to Thai baht at a Japanese airport or bank, or wait until you arrive in Thailand? How the gap in what you receive comes about, an automatic calculation of what you'd get at today's best in-city rate, and how much cash to decide on before you travel.
- 1You'll receive more baht by exchanging cash after you arrive in Thailand than at a Japanese airport. The gap is roughly 10%, and it almost never flips direction
- 2Today's best in-city rate is Max Exchange Head Office at 0.2141, giving 2,141 ฿ for 10,000 JPY
- 3At the airport, exchange only enough for transport and your first day; do the bulk of it at a shop in the city. Don't worry about yen denominations — just keep the bills in good condition
The short answer: you'll receive more Thai baht by exchanging cash after you arrive in Thailand rather than beforehand in Japan. The size of the gap varies day to day, but it almost never flips direction. Here's why, along with what you'd actually receive at today's rates.
Why the gap exists
The baht is a "minor currency" with limited circulation inside Japan. Japanese banks and airport exchange counters hold baht as inventory and price in the cost of shipping and storing it. In Thailand, by contrast, baht is the local currency, and yen arrives in large volumes as a major foreign currency. Exchange shops there make their business buying yen and selling it on to banks, so they can operate on a thin margin.
That structural difference shows up directly as a gap in the rate. Comparing published rates, Japanese airport exchange counters typically pay out roughly 10% less (about 10-12% by published rate) than the best in-city rate in Thailand.
If you exchange at today's best in-city rate
Here's what you'd receive for 10,000 JPY at the best rate this site tracks among private exchange shops in Thailand.
- Best in-city rate (Max Exchange Head Office): 2,141 ฿
- Private exchange shop at Suvarnabhumi Airport (Happy Rich Exchange): 2,050 ฿
- Bank rate (reference): 2,092 ฿
Check each provider's published rate for what you'd receive in Japan. The gap against the best in-city rate is often around 200 baht per 10,000 JPY, which works out to around 2,000 baht on 100,000 yen.
Do you need to exchange a little in Japan first?
The real question is how to cover transport and first-day expenses after you land. There are three options.
- Exchange just what you need at the private exchange shops on the airport's basement floor in Thailand (recommended — see the airport exchange guide)
- Exchange around 5,000 yen in Japan beforehand (a loss of a few hundred yen as peace of mind)
- Head into the city using card payment — a ride-hailing app or the contactless-enabled Airport Rail Link — and exchange cash near your hotel
Exchanging money in Japan only really makes sense if you're arriving late at night and your only transport option takes cash. Otherwise, exchanging after you arrive in Thailand works out better.
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How much cash to bring
Work backward from spending that can only be paid in cash. Street food, markets, metered taxis, and small shops mostly run on cash. Hotels, department stores, chain stores, and ride-hailing apps all take cards.
- For a short stay: about 2,000-3,000 baht in cash per day is enough
- Put the rest toward card payments or ATM withdrawals with a debit card
- Don't worry about yen denominations — most shops buy 10,000-yen and 5,000-yen notes at the same rate. What matters more is the condition of the bill (no creases, tears, or marks) — see the denomination rate guide for details
Exchange your baht cash after you arrive in Thailand. At the airport, exchange only enough for transport and your first day; do the bulk of it at a good-rate shop in the city. Today's best in-city rate is Max Exchange Head Office at 0.2141, giving 2,141 ฿ for 10,000 JPY.
Before you leave, check these
- Licensed exchange shops require an original passport for identification, almost without exception, even for small amounts. Leaving it at the hotel means you won't be able to exchange
- Bring bills that are free of creases, tears, or marks — poorly conditioned notes can be refused
- Exchange shop rates update during the day. This site collects published rates every 15 minutes, so checking Compare Bangkok rates the morning you arrive tells you the day's level
FAQ
Calculated from Japanese airport exchange counters' published rates, you typically receive roughly 10% less than the best in-city rate in Thailand. For a large amount, exchanging after you arrive in Thailand works out better.
It's not necessary. Exchanging just what you need at the private exchange shops on the airport's basement floor in Thailand is enough. Only if you're arriving late at night and your only transport option takes cash is it worth exchanging around 5,000 yen in Japan beforehand.
Street food stalls, markets, taxis, and small shops mostly run on cash, so a rough guide is about 2,000-3,000 baht per day, with the rest covered by card payments or debit-card ATM withdrawals in Thailand.
The rates and amounts in this article are calculated automatically from each exchange shop's published rates, collected by this site every 15 minutes. How the data is sourced and updated