Tips for KRW/JPY
- • Compare rates from multiple sources before exchanging KRW to JPY
- • Business travelers should use TTM rates for expense reports
- • Check Zenrate regularly for the latest mid-market rates
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Frequently Asked Questions
How much is 10,000 KRW in JPY?
Use Zenrate to convert 10,000 South Korean Won to Japanese Yen at the current mid-market rate. The rate updates throughout the day.
What is the best KRW to JPY exchange rate?
The best rate depends on your method. Check Zenrate's Exchange Finder for crowdsourced rates from money changers, or compare online services on our Compare page.
Where can I exchange KRW to JPY?
Use Zenrate Exchange Finder to find money changers with the best rates in cities across Asia. For online transfers, compare services like Wise and Revolut.
What is TTM rate for KRW?
TTM (Telegraphic Transfer Middle rate) is the mid-market rate used by Japanese banks for accounting. Zenrate Business mode shows TTM, TTS (sell), and TTB (buy) rates for expense reports.
Is it better to exchange at the airport or city?
City exchange shops typically offer 3-5% better rates than airports. Use Zenrate Exchange Finder to compare before you travel.
Sources & Methodology
Exchange rates are mid-market rates sourced from the Exchange Rate API, which aggregates data from central banks and financial institutions. Historical data is provided by the Frankfurter API (ECB reference rates). Rates are cached for 12 hours and are for informational purposes only. Actual transaction rates from banks and services may differ.
Reference notes for KRW/JPY
When you typically see KRW/JPY
The dominant flow is reverse of the Japanese-tourist case: Korean travelers to Japan recording yen-spent against their won-funded card statements. Inbound Korean tourism to Japan has been heavy in 2024–2025; per-traveler receipt counts are high. Korean exporters to Japan — auto parts, K-content licensing fees, processed food — translate JPY income to KRW for Korean books. Korean SMEs subscribed to Japanese SaaS (less common than the inverse, but growing) translate monthly JPY bills.
How KRW/JPY behaves in accounting
Mizuho publishes JPY/KRW with KRW values per 100 KRW; the Mizuho fetcher handles normalization. From the Korean accounting side, Bank of Korea reference rates apply; not implemented as a Zenrate fetcher. Volatility tracks jpy-to-krw inversely. For Korean tourism receipts (highest volume), transaction-date is conventional. For exporter translations, prior-month-end is common on the Korean side because it simplifies VAT period reporting.
Common conversion mistakes for KRW/JPY
Same per-100-KRW gotcha. A Mizuho TTM line of ¥0.10 means ¥10 per 100 KRW, equivalently ¥0.10 per 1 KRW. Misreading by 100× is the most common error on this pair, especially in spreadsheets copied from Mizuho's published CSV directly. Zenrate normalizes internally. Second: applying the airport exchange counter rate at Incheon to all receipts spent in Japan. Counter rates capture only that one cash conversion; card receipts settled at the Korean card network's rate plus issuer markup. Third: forgetting that Korean credit card statements often list foreign transactions in the Korean issuer's translated KRW amount, not the original JPY. Booking the KRW amount and re-translating to JPY for record-keeping introduces an extra round trip with rounding loss; record the original JPY where possible and the KRW credited as a separate reconciliation line.
What Zenrate stores for KRW/JPY
Live conversion via exchangerate-api.com, twelve-hour cache, KRW normalized to per-1. Historical: Mizuho JPY/KRW via dbFetcher/edgeFunction with per-100-KRW normalization in code. ECB via Frankfurter cross-rated through EUR. All six rate policies work. Prior-month-average is reliable on Mizuho because Tokyo trading days line up closely with KRW trading days (both miss weekends; Korean holidays sometimes diverge).
These notes describe the rate sources actually implemented in @zenrate/core/rate-sources at the time of publication. Behavior may evolve; the source code is the ground truth.