Currency Converters Compared: Banks, Cards, Apps and Crypto

Updated on June 5, 2026

The Hidden Cost Nobody Talks About

Ask most travelers how much they paid to convert currency and you'll get a blank stare. They'll remember the exchange rate on the screen, but almost nobody calculates the full cost — the spread, the service fee, the foreign transaction charge buried in their card statement three days later. When you actually run the numbers across banks, travel cards, fintech apps, and even crypto, the differences are startling. On a $5,000 international transfer, the gap between the cheapest and most expensive method can exceed $200.

This piece pulls together published fee schedules, independent rate-tracking data, and real-world transfer tests to give you a method-by-method breakdown. No sponsored rankings. Just the math.

How to Actually Measure "Cost"

Before comparing anything, we need a fair metric. The number on the board at a currency kiosk is almost meaningless without context. What matters is the all-in effective rate — the mid-market rate (what you'd see on Google or XE.com) minus whatever you actually receive, expressed as a percentage.

For example, if mid-market USD/EUR is 0.9200 and your bank gives you 0.8900, you've lost 3.26% before any fee is even charged. Add a $25 wire fee on a $1,000 transfer and your total cost jumps to 5.76%. That's the number worth caring about.

We also factor in speed — because cheap but slow matters a lot if you're paying rent abroad or closing a business deal.

Traditional Banks: Familiar but Expensive

Let's start with the obvious choice most people default to. Major retail banks — think Chase, Bank of America, HSBC, Barclays — typically mark up the mid-market rate by 2% to 4% on standard currency exchanges and international wire transfers. On top of that, outgoing international wire fees range from $25 to $50, with receiving banks sometimes charging an additional $10 to $20 on the other end.

Based on data from Monito's 2024 transfer benchmark, a $1,000 USD to GBP transfer via a major US bank costs an average of $47 in total fees — a 4.7% all-in cost. At $5,000, the percentage drops slightly (the fixed wire fee becomes proportionally smaller), landing around 3.1% — but that's still $155 out of your pocket.

Speed is marginally better than its reputation. SWIFT transfers typically arrive in 1–3 business days, though delays through correspondent banks can push this to 4–5 days in edge cases.

  • Typical rate markup: 2–4% over mid-market
  • Fixed fees: $25–$50 outgoing wire
  • Speed: 1–3 business days
  • Best for: Large transfers where you have an existing relationship and need paper trail / regulatory coverage

Debit and Credit Cards Abroad: The Spread Varies Wildly

Using your card internationally is convenient, but "no foreign transaction fee" cards are not the same as "good exchange rate" cards. These are two separate things that marketing materials love to conflate.

Cards with no foreign transaction fee still apply Visa or Mastercard's network rate — which is typically within 0.5% of mid-market and updates daily. That's actually pretty good. The problem is when your bank layers an additional 1–3% currency conversion fee on top, even on no-FX-fee cards at some institutions.

Dynamic Currency Conversion (DCC) — when a foreign merchant offers to charge you in your home currency — is a trap. The merchant's bank sets the rate, and it's routinely 3–7% worse than the network rate. Always pay in local currency.

Cards specifically designed for travel — Charles Schwab debit, Wise debit card, Revolut, Starling (UK) — pass the interbank rate through with zero or near-zero markup for most currencies. Revolut's free tier gives mid-market rates on weekdays up to £1,000/month; beyond that, a 0.5% fair usage fee kicks in. Wise charges a small fixed fee plus a percentage that varies by currency pair, typically landing at 0.4–1.1% all-in.

  • Standard bank card: 0–3% FX fee + Visa/MC network spread (~0.5%)
  • Travel-optimised cards: 0–1.1% all-in for most major pairs
  • DCC trap: Avoid — adds 3–7% invisibly
  • Speed: Instant at point of sale

Fintech Transfer Apps: The Current Best Value

This is where the market has genuinely shifted over the last five years. Apps like Wise (formerly TransferWise), Revolut, Remitly, and OFX have compressed costs dramatically for most corridors.

Wise is worth examining in detail because it publishes its fee structure transparently. A $1,000 USD to EUR transfer via Wise costs roughly $5.07 in fees (as of mid-2025 benchmarks) — an all-in cost of about 0.5%. The rate you get is the mid-market rate, no markup. For the same transfer, Western Union charges around $32 in fees with a 1.5% rate spread, totalling close to 4.7%.

Remitly competes aggressively on popular remittance corridors — USD to PHP, USD to INR, GBP to NGN — often offering promotional rates that bring costs below 1%. Their Express transfers (debit-funded) typically arrive in minutes; Economy transfers (bank-funded) take 3–5 days but cost less.

OFX targets larger transfers ($1,000+) and offers competitive rates with no fixed fees — they make money purely on the spread, which sits around 0.4–0.7% for major pairs at volume. They also assign you a human dealer for large transfers, which matters for business customers.

  1. Wise: ~0.4–1.1% all-in, mid-market rate, transfers in minutes to 1 day for major currencies
  2. Revolut: 0% markup on weekdays (within limits), instant for Revolut-to-Revolut, 1–2 days bank transfer
  3. Remitly: Under 1% on major remittance corridors, minutes (Express) or 3–5 days (Economy)
  4. OFX: 0.4–0.7% spread, no fixed fees, best for $5,000+ transfers

The catch with fintechs: transfer limits, identity verification delays for first-time users, and occasional holds on large amounts. They're not appropriate for every use case, but for regular international payments under $50,000, they're hard to beat on cost.

Crypto: Fast Between Wallets, Expensive at the Edges

Cryptocurrency gets evangelised as the ultimate low-cost transfer method, and the blockchain-to-blockchain part is genuinely cheap. Sending USDC on Solana costs fractions of a cent. Sending ETH on Ethereum's L2s (Arbitrum, Base) costs under $0.05 in most conditions.

But most people don't hold crypto. They need to convert fiat to crypto, send it, then convert crypto back to fiat. Those on/off ramps are where the costs accumulate — and they can be brutal.

Buying $1,000 of USDT on Coinbase (Advanced) and selling on Binance in another country might look like this: Coinbase buy spread ~0.6%, withdrawal fee varies by network, Binance sell spread ~0.1%, local P2P or bank withdrawal fee 0.5–2%. Total: easily 2–4% for a realistic end-to-end transfer, plus the complexity of managing wallets and the volatility risk if you use non-stablecoins.

Stablecoins reduce volatility but don't eliminate exchange costs. Crypto makes more sense when both sender and receiver are already in the ecosystem — a freelancer paid in USDC who spends from a crypto card, for instance. As a pure currency conversion tool for the average user, crypto underdelivers on its cost promises once ramps are included.

  • On-chain transfer (wallet to wallet): Near-zero to $0.50
  • On/off ramp costs: 1–3% per leg
  • Realistic all-in cost: 2–4%+ for fiat-to-fiat via crypto
  • Speed: Seconds to minutes on-chain; 1–3 days for fiat withdrawal
  • Best for: Users already holding crypto, cross-border gig payments, unbanked corridors

The Decision Matrix: Picking Your Method

Here's how the methods stack up across the scenarios most readers actually face:

  • Holiday spending (small amounts, point of sale): Wise or Revolut debit card. Pay in local currency always.
  • Sending money to family abroad ($200–$2,000): Remitly or Wise, depending on corridor. Check both for your specific pair — rates vary by route.
  • Large one-off transfer ($10,000+): OFX or a specialist FX broker (Moneycorp, Key Currency). The percentage savings on a large sum justify a phone call to negotiate a rate.
  • Regular business payments: Wise Business or a dedicated FX platform. Automate recurring transfers to lock in process efficiency.
  • Crypto-to-crypto payments: Stablecoins on low-fee networks. Keep fiat conversion minimal.
  • Emergency wire (needs bank-to-bank credibility): Your bank, accepting the higher cost for reliability and paper trail.

The Bottom Line

The cheapest method for most people, most of the time, is a dedicated fintech transfer app or a travel-optimised debit card — not because they're trendy, but because the fee data simply supports it. Traditional banks charge 3–5x more than Wise or OFX on identical transfers. Crypto sounds revolutionary but its ramp costs eat the advantage for anyone not already in the ecosystem.

The one investment worth making before your next international transfer: spend five minutes on a comparison tool like Monito or Finder's international transfer comparison, plug in your exact amount and corridor, and sort by total cost received. That one habit, applied consistently, will save most people hundreds of dollars a year.