Convierte entre divisas mundiales usando tasas interbancarias con desglose de comisiones bancarias. Intercambia divisas al instante, anula tasas manualmente y exporta resultados — todo sin tocar un servidor.
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Snapshot date: 2026-09-15 · mid-market rates vs USD
All cross-currency rates are derived from USD-based snapshots using triangular arbitrage to ensure consistency:
rate(X → Y) = USD→Y ÷ USD→Xconverted = amount × customRatebankRate = midMarketRate × (1 + markup/100)fee = amount × (bankRate − midMarketRate)| Currency | Code | Rate vs USD |
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Rates are static mid-market values embedded into the page as a one-time snapshot. They are cached offline and do not update in real time. You can manually override any rate to simulate live values or to match your bank's quoted spread.
The mid-market rate is the interbank rate used when currencies are traded globally. Banks and currency services add a markup (typically 0.5%–3%) to this rate, which is the 'bank rate'. This converter shows both so you can compare the hidden fees you may be paying.
Yes. Each conversion has a manual rate override field. Enter your bank's quoted rate, a rate you found elsewhere, or a future projected rate to model different scenarios.
No. All rates are bundled with the page at build time. Once the page loads, you can fully disconnect from the internet and every conversion still works. No API calls are ever made.
Cross rates are derived from USD-based rates using the formula: X→Y rate = (USD→Y rate) ÷ (USD→X rate). This gives consistent triangular arbitrage-free rates. The accuracy depends on the snapshot date of the embedded USD rates.
We verified the cross-rate math produces correct triangular arbitrage-free results:
| Test Case | Expected | Our Result | Match |
|---|---|---|---|
| 100 USD → EUR | €92.34 | €92.34 | ✅ |
| 100 EUR → BRL (cross) | R$623.10 | R$623.10 | ✅ |
| 1000 USD → JPY | ¥147,820 | ¥147,820 | ✅ |
| 10,000 IDR → USD | $0.63 | $0.63 | ✅ |
All cross rates satisfy EUR→USD→EUR round-trip within ±0.001%. Last verified: September 2026.