Calcoid

Currency Converter

Convert between 12 major world currencies including USD, EUR, GBP, JPY, and more. Cross-rate calculations with a swap function for quick reverse conversions.

Convert currencies

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Currency Code Reference

Current ECB reference rates load when you open the converter. The result shows the data date and source; a short cache can make the response a few minutes old.

ISO codeCurrencyCommon use
USDUS DollarUnited States
EUREuroEuro area
GBPBritish PoundUnited Kingdom
JPYJapanese YenJapan
CADCanadian DollarCanada

Frequently Asked Questions about the Currency Converter

Does this converter use live exchange rates?
Yes. When you open the converter, it requests the latest available European Central Bank (ECB) reference rates. The result displays the ECB data date and source. A short cache can leave the displayed rates a few minutes behind the latest response, and these are not tick-by-tick market quotes.
How are cross rates between two non-EUR currencies calculated?
The converter divides the fetched reference rate for the target currency by the fetched reference rate for the source currency, using their shared reference base. That base cancels, leaving a direct cross rate without a separate cross-rate table. The result also identifies the ECB data date and source used.
Where can I check the rate for a real transaction?
The converter loads the latest available ECB reference rates when you open it and shows their data date and source. For a payment or transfer, check the current quote from your bank, card issuer, or payment provider. Their applied rate can include a spread or other fees, and a cached ECB response can be a few minutes old.
Do banks and credit cards charge fees on top of the exchange rate?
They can. A provider may apply a rate spread, foreign-transaction fee, transfer fee, or ATM fee. The amounts and combinations vary by account, network, currency, and transaction type, so check the provider's quote and fee schedule.
How accurate is the converted amount for actual transactions?
The calculation applies the ECB reference rate fetched for the page, but the result is still an estimate for an actual transaction. Market rates can move after the data loads, a short cache can delay the response by a few minutes, and providers use their own rates, spreads, and fees. Get a current all-in quote before sending money.

Changelog

Updates to Currency Converter, grouped by date.

  1. Currency Converter added

    • Convert between 12 major world currencies including USD, EUR, GBP, JPY, and more. Cross-rate calculations with a swap function for quick reverse conversions.

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