Japan travel currency calculator

Yen to won calculator: travel budgets and fees

Convert yen prices to won, or work backwards from a won budget. Add your fees and see how a different exchange rate changes the result.

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Conversion direction

Estimate the won cost of a yen price.

Amount in Japanese yen

KRW per JPY 100

See the reference date and source below. You can enter a rate quoted by your bank or card provider.

Include your fees

These assumptions apply to one payment or exchange amount. Avoid adding the same fee twice if it is already included in your rate.

Percentage fee (%)Additional fixed cost (KRW)

Estimate for your inputs

Calculating…

Only entered fees are included; zero adds none. This is not a transaction quote or a reservation.

How would a different rate affect this budget?

Rate change to compare 3%

Compare hypothetical rates above and below your input. These are scenarios, not exchange-rate forecasts.

Scenario	KRW / JPY 100	Estimate	Difference

Start with the rate unit: KRW per JPY 100

Entering 850 won per 100 yen means one yen costs 8.5 won. Multiply yen by 850 and divide by 100. The 850 rate below is an example, not the current rate.

Yen amount	Example rate	KRW before fees
¥1,000	100 JPY = 850 KRW	8,500 KRW
¥5,000	100 JPY = 850 KRW	42,500 KRW
¥10,000	100 JPY = 850 KRW	85,000 KRW

Adding your own fees

For ¥10,000 at 850 KRW per JPY 100, with a hypothetical 1% fee and 1,000 KRW fixed cost: 85,000 + 850 + 1,000 = 86,850 KRW. These fees are examples; check your provider’s actual conditions.

Working backwards from a won budget

Subtract the fixed cost, then divide the remaining budget by the per-yen cost including the percentage fee. At 850 KRW per JPY 100 with no fees, 100,000 KRW covers 11,764 whole yen. The yen budget is rounded down and the unused won amount is shown.

Calculations retain precision until final won display rounding. Cash denominations, card settlement dates, provider rates and unentered fees can change the actual transaction.

Reference-rate date and source

The default is calculated from ECB yen and won references against the euro: KRW reference ÷ JPY reference × 100. It is not a live exchange, transfer or card-payment rate.

Publication date: 2026-10-23 · Checked: 2026-10-25 · Official ECB reference rates

The latest working-day reference may remain over weekends and holidays. A different rate is labelled as your custom input.

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