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วิธีการคำนวณ Currency Exchange

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A currency exchange calculator converts an amount between currencies using a mid-market rate, then models the bank spread and fixed fees applied by financial institutions to show what you actually receive.

สูตร

Bank Rate = Mid-market Rate × (1 − Spread%)

คำแนะนำทีละขั้นตอน

  1. 1Mid-market Rate = true interbank exchange rate
  2. 2Bank Rate = Mid-market Rate × (1 − Spread%)
  3. 3Amount Received = Amount × Bank Rate − Fixed Fee
  4. 4FX Cost = (Amount × Mid-market Rate) − Amount Received

ตัวอย่างที่มีคำตอบ

อินพุต
$1,000 USD to EUR, rate 0.92, 2% spread
ผลลัพธ์
Bank rate 0.9016, receive €901.60, cost $18.40
อินพุต
£500 to USD, rate 1.27, 1.5% spread
ผลลัพธ์
Receive $624.98 vs $635.00 at mid-market
อินพุต
$500, 3% spread + $5 fixed fee
ผลลัพธ์
Effective total FX cost = $20 (4% of amount)

คำถามที่พบบ่อย

What is Currency Exchange?

A currency exchange calculator converts an amount between currencies using a mid-market rate, then models the bank spread and fixed fees applied by financial institutions to show what you actually receive. Use this calculator for accurate, instant results.

How accurate is the Currency Exchange calculator?

The calculator uses the standard published formula for currency exchange. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Currency Exchange calculator use?

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Currency Exchange calculator use?

The core formula is: Mid-market Rate = true interbank exchange rate. Each step in the calculation is shown so you can verify the result manually.

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