Currency Exchange Fee Calculator
How much foreign currency you actually receive after the exchange-rate markup (spread), a fixed transaction fee and a foreign ATM fee, and what those fees cost you in your own currency. Compare a card, a bank ATM and an airport exchange desk before you travel.
Last updated: October 2026
Foreign currency received
1,223.81 units
Formula below · 3 sources (CFPB, federalreserve.gov, ecb.europa.eu) · Updated Oct 2026
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About this calculator
What you receive = (amount − fixed fee − ATM fee) × mid-market rate × (1 − spread). The two fixed fees are charged in your home currency and come off the amount before it is converted. The mid-market (interbank) rate is the rate quoted on financial news sites and by the ECB and central banks, with no margin in it; providers rarely give you that rate. Instead they quote a customer rate a few percent worse, and that percentage is the spread, the largest and least visible cost of most exchanges. The calculator applies it as a factor of (1 − spread), so a 3.5% spread leaves 96.5% of the converted value. Typical spreads: 0% on a card that charges no foreign transaction fee and converts at the network rate (Visa and Mastercard add well under 1%), 1% for specialist multi-currency cards and transfer services, 2–3% for ordinary credit and debit cards abroad (the foreign transaction fee), 3–4% for a bank ATM withdrawal including the home bank's own charge, 5–8% at airport and hotel exchange desks, and 5–12% for dynamic currency conversion, the option to pay in your home currency at a foreign terminal, which should almost always be declined. Fixed fees matter most on small amounts: a $5 fee is 0.3% of $1,500 but 5% of $100, which is why a few large ATM withdrawals beat many small ones. The tiles translate the result into the total cost in both currencies, the cost as a percentage of the amount, and the effective rate you actually received (foreign units per unit of home currency), which is the number to compare between providers. To find a provider's spread yourself, divide its quoted customer rate by the mid-market rate and subtract from 1. The calculation assumes the fees are known in advance; some ATMs add their operator fee on screen only at the end, and some banks charge a percentage rather than a flat fee, which you can fold into the spread.
Typical exchange-rate markups by channel (approximate; check your provider's terms)
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| Channel | Typical spread | Fixed fees |
|---|---|---|
| Card with no foreign transaction fee (network rate) | 0–1% | None |
| Specialist multi-currency card or transfer service | 0.5–1% | Small fixed fee on transfers |
| Ordinary credit or debit card abroad | 2–3% foreign transaction fee | None (cash advances excepted) |
| Bank ATM withdrawal abroad | 3–4% including the home bank's charge | $2–5 home bank fee + ATM operator fee |
| Airport, hotel or tourist-area exchange desk | 5–8% | Sometimes a commission |
| Dynamic currency conversion at the terminal | 5–12% | On top of your card's own fees |
How to use
Example 1 — a bank ATM withdrawal abroad (the defaults): $1,500 at a mid-market rate of 0.85, a 3.5% spread, a $5 transaction fee and a $3 ATM operator fee. Step 1: fixed fees $5 + $3 = $8, leaving $1,492 to convert. Step 2: $1,492 × 0.85 = 1,268.20 foreign units. Step 3: × (1 − 0.035) = 1,268.20 × 0.965 = 1,223.81 units received. At the mid-market rate $1,500 is worth 1,275 units, so the spread and fees cost 51.19 units, or $60.22, which is 4.01% of the amount; the effective rate was 0.8159 instead of 0.85. Example 2 — the same trip paid with a 2% foreign-transaction-fee card and no fixed fees: $1,500 × 0.85 × 0.98 = 1,249.50 units, a cost of 25.50 units ($30). A card with no foreign transaction fee (spread 0) gives the full 1,275 units. Example 3 — $300 at 1.25 (USD to AUD) through a bank ATM, $4 fixed fee, $3 ATM fee: ($300 − $7) × 1.25 × 0.965 = AUD 353.43 against AUD 375 at mid-market, a cost of AUD 21.57 (5.75%): the same spread hurts more on a small withdrawal.
Frequently asked questions
What is an exchange-rate spread, and how do I find it?
The spread (margin, markup) is the difference between the mid-market rate and the worse rate the provider gives you, expressed as a percentage. Divide the customer rate by the mid-market rate from a financial news site or a central bank and subtract from 1: a quoted 0.82 against a mid-market 0.85 is a 3.5% spread. It is the main cost of most exchanges and is not shown as a fee.
Is it cheaper to use a card, an ATM or an exchange desk abroad?
Usually in that order. A credit or debit card with no foreign transaction fee converts at the card network's rate, within a fraction of a percent of mid-market. Cards with a foreign transaction fee cost 2–3%. Bank ATM withdrawals add a spread of about 3% plus a fixed fee from your bank and often an operator fee, so withdraw larger amounts less often. Airport and hotel desks charge 5–8%; dynamic currency conversion at the terminal is worst.
What is dynamic currency conversion?
The offer at a foreign card terminal or ATM to be charged in your home currency instead of the local one. The merchant's processor sets the rate, typically 5–12% worse than mid-market, on top of whatever your own card charges. Choosing the local currency lets your card network convert at its rate instead.
Why do fixed fees matter more for small amounts?
A fixed fee is the same whatever the amount, so it is a larger share of a small exchange: $8 is 0.5% of $1,500 but 8% of $100. For ATM use that means fewer, larger withdrawals; for transfers it means comparing the total cost (spread plus fee) at the amount you actually send, since a service with a higher fee and a lower spread wins above some threshold.
What is the effective exchange rate?
The foreign currency you received divided by the home currency you paid, fees included: 1,223.81 ÷ 1,500 = 0.8159 in the default example against a mid-market 0.85. It is the single number to compare between providers because it captures spread and fixed fees together at your amount.
Does this work for sending money abroad as well as travel?
Yes. A transfer service also has a spread and often a fixed fee; set the ATM fee to zero. Specialist transfer services typically charge a 0.5–1% spread plus a small fixed fee, while banks often charge a 2–4% spread plus a wire fee of $25–50, so the calculator shows quickly which is cheaper at your amount.
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