Currency Converter & Bank FX Fee Comparison
Real-time mid-market foreign exchange rates with hidden bank spread fee detector.
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How Currency Converter & Bank FX Fee Comparison Works
The mid-market rate is the real exchange rate with no margin added. Banks and card providers usually add a spread of 3% to 4% on top, so you receive fewer foreign dollars than the headline rate suggests. At an illustrative rate of 0.65, A$1,000 converts to US$650 at the mid-market rate, but with a 3.5% spread you receive 650 × 0.965 = US$627.25, a cost of US$22.75. Compare the actual rate you are offered with the mid-market rate to see the real fee. Exchange rates move constantly and the figures here are estimates, not a quote, so check the live rate with your provider before you transfer.
- Enter Amount to Convert: Input your target parameter value.
- Enter From Currency: Input your target parameter value.
- Enter To Currency: Input your target parameter value.
- Enter Estimated Bank Spread / Margin (%): Input your target parameter value.
- Apply Formula: Calculate using
Mid-Market Conversion = Amount × (To Rate / From Rate) | Bank Fee = Mid-Market - Bank Payout. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
What is the mid-market exchange rate?
The mid-market rate is the midpoint between global buy and sell prices on wholesale financial markets without any retail dealer markup.
How do banks hide foreign exchange fees?
Banks often advertise 'zero commission' while inflating the exchange rate by 3% to 5% above the true mid-market rate, pocketing the difference.
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Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
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