Exchange Rate Calculator

The Exchange Rate Calculator is a real-time currency conversion tool powered by official exchange rate data from the Korea Exchange Bank (KOREAEXIM), which is the primary source for official exchange rates used throughout the Korean financial system. This calculator supports conversion between Korean Won (KRW) and all major world currencies including USD, EUR, JPY, GBP, CNY, and more. Exchange rates play a critical role in international trade, overseas travel, foreign investment, and remittances. For Korean businesses importing raw materials or exporting finished goods, even small fluctuations in exchange rates can mean millions of Won in profit or loss. For individuals sending money to family abroad, studying overseas, or planning international travel, knowing the current rate and understanding the spread between buying and selling rates is essential for minimizing costs. This calculator displays three key rates for each currency pair: the base rate (mid-market interbank rate), the buying rate (what you pay when purchasing foreign currency), and the selling rate (what you receive when selling foreign currency). The difference between buying and selling rates represents the bank's exchange commission, commonly called the spread. By providing all three rates, this tool helps you understand the true cost of any currency exchange transaction and compare it against what banks and exchange services offer.

Step 1: Select your source currency from the dropdown menu. The calculator supports all currencies published by the Korea Exchange Bank, including major currencies (USD, EUR, JPY, GBP, CNY, AUD, CAD) and many others. Korean Won (KRW) is available as both source and target. Step 2: Enter the amount you want to convert. You can enter any positive number, including decimals for fractional currency amounts. Step 3: Select your target currency from the second dropdown. The calculator will automatically perform the conversion using the most recent available exchange rate. Step 4: View the result, which includes the converted amount, the applied base rate, and the inverse rate (useful for quick mental calculations in both directions). Step 5: Use the swap button to quickly reverse the conversion direction. This is handy when you need to check both directions of a currency pair. Step 6: Review the reference rates section, which displays the base rate, buying rate (what you would pay to purchase the foreign currency), and selling rate (what you would receive when selling the foreign currency). These three rates help you estimate the actual cost at a bank or exchange service. Note on timing: Exchange rates are published once per business day, typically in the morning. On weekends and Korean public holidays, the most recent business day's rates are displayed. The data date shown indicates when the rates were last updated.

Conversions are based on the Korea Exchange Bank's official base rates, which represent the mid-market interbank exchange rate for each currency against the Korean Won. Direct Conversion (involving KRW): Foreign Currency to KRW: Amount in Foreign Currency x Base Rate = Amount in KRW KRW to Foreign Currency: Amount in KRW / Base Rate = Amount in Foreign Currency Cross-rate Conversion (between two non-KRW currencies): Amount in Currency A x (Base Rate of A in KRW) / (Base Rate of B in KRW) = Amount in Currency B Special Unit Handling: Some currencies are quoted per 100 units rather than per single unit. For example, JPY (Japanese Yen) and IDR (Indonesian Rupiah) are quoted as the KRW value of 100 units of that currency. The calculator automatically normalizes these to per-unit rates before performing conversions, so you can enter any amount without worrying about the quotation convention. Example Calculations: 1. USD to KRW: 1,000 USD at base rate 1,350.50 = 1,350,500 KRW 2. KRW to USD: 1,000,000 KRW at base rate 1,350.50 = 740.46 USD 3. JPY to USD (cross-rate): 100,000 JPY, JPY base rate = 902.50 per 100 JPY, USD base rate = 1,350.50 Step 1: 100,000 JPY x (902.50/100) = 902,500 KRW Step 2: 902,500 / 1,350.50 = 668.64 USD Buying vs. Selling Rates: Buying Rate = Base Rate + Bank Spread (higher than base rate — you pay more to buy foreign currency) Selling Rate = Base Rate - Bank Spread (lower than base rate — you receive less when selling) Typical bank spreads are 1-2% for major currencies like USD and JPY, and 2-4% for minor currencies.

Minimizing Exchange Costs: The base rate shown in this calculator is the interbank mid-market rate — the most favorable rate that exists. Banks and exchange services add a margin (spread) on top of this rate. To minimize your exchange costs, compare the rate you are offered against the base rate shown here. If the difference exceeds 1.5-2% for major currencies, you may be paying too much and should shop around. Online and Mobile Banking Discounts: Korean banks typically offer 50-90% discount on the exchange spread when you exchange currency through online or mobile banking compared to branch window rates. For example, if the branch spread is 1.75%, online banking might charge only 0.175-0.875%. Always check your bank's mobile app first before visiting a branch. Best Times to Exchange: Exchange rates fluctuate throughout the day based on global foreign exchange markets. The Korea Exchange Bank publishes its rates once daily, but if you exchange at a bank, the actual rate may differ from the published rate. Generally, rates are more favorable (tighter spreads) during peak trading hours when market liquidity is high. For KRW/USD, this is typically during Korean morning hours when both Asian and late US trading sessions overlap. Travel Money Tips: If you are traveling abroad, exchange a small amount in Korea before departure for immediate expenses (taxi, first meal) and exchange the rest at your destination where local competition may offer better rates. Airport exchanges in Korea have the widest spreads — avoid them if possible. In many countries, ATM withdrawals with an international debit card offer near-base-rate exchange rates with only a small flat fee. Business Hedging: For businesses with regular foreign currency exposure, consider forward contracts or currency options to lock in exchange rates for future transactions. This eliminates the risk of unfavorable rate movements between the time you quote a price and the time you actually need to exchange currency. Weekend and Holiday Rates: Exchange rates are only updated on business days. If you need to exchange currency on a weekend or holiday, the rate you get will be based on the last business day's rate, but banks may add an additional weekend surcharge due to the increased risk of rate movements before markets reopen.