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https://fxpeek.com/api/rates?from=USD&to=EURFXpeek currency tools
The exchange rate you used, with proof.
FXpeek is a historical exchange-rate reference tool with dated rates, source-linked CSV exports, and lightweight API workflows for invoices and month-end close.
Converted amount100 USD = 86.69 EUR
1 USD = 0.86693 EUR · ECB reference
01
Using this for a document?Choose the invoice, receipt, or closing date before you copy the result.
2015- daily reference rates15 currenciesCSV + JSON free exports
to
Download 365-day CSV
/api/csv?from=USD&to=EUR&days=365Copy Sheets formula
=IMPORTDATA("https://fxpeek.com/api/csv?from=USD&to=EUR&days=365")Before you use a rate
Six questions that make a rate usable later
A reference number is easier to verify when its date, method, source, and intended workflow stay together.
01
View all 12 exchange-rate decisionsWhich date and rate should I use?
Start with the invoice, receipt, or reporting date and keep the applicable reference date.
Check a dated rate02Where did the number come from?
Review source coverage, update timing, rate convention, and reference-only limits.
Read the methodology03How should I document USDT or USDC?
Use a fiat reference workflow with a source, timestamp, and clear limitations.
Open stablecoin guide04Is my regional currency pair covered?
Open a data-backed history page for a Southeast Asian or long-tail currency pair.
Check regional history05How do I move rates into CSV or Sheets?
Use a source-linked CSV URL or IMPORTDATA formula for a repeatable spreadsheet workflow.
Open the CSV guide06Which rate belongs in a month-end file?
Choose the reporting date or documented monthly method, then retain the source and retrieval date.
Open month-end guideStablecoin reference
USDT and USDC calculator
Check USDT/USD, USDC/USD, USDT/CNY, and USDC/CNY reference rates for reports and spreadsheet notes.
Reference rate, not a transaction quote.
Reference conversionEnter an amount to calculate
Use the stablecoin reference pages or refresh to load the latest available reference rate. Open stablecoin reference pages
Data quality
Where the numbers come from
Rates come from public reference feeds and stay connected to their date, currency pair, source URL, CSV/API paths, and reference-only limits.
Data-backed currency-pair and scenario pagesCSV, API, citation, and Google Sheets outputsVisible reference-only and no-transaction-quote limitsContact path for data discrepancies and coverage requests
What you should know before using a rate
The date, source, method, and limitations stay visible so a result can be checked later.
Where does FXpeek exchange-rate data come from?
Fiat reference rates are retrieved through Frankfurter from European Central Bank reference data. Stablecoin reference rates come from the CoinGecko simple price API. FXpeek shows reference values, not bank buy or sell quotes.
What does the exchange rate on a date mean?
It is the reference rate published for the response asOf date. FXpeek syncs after source data is available and does not describe the result as an intraday close, settlement rate, or real-time transaction quote.
Can I use FXpeek for invoices, tax files, or audits?
FXpeek can support a record with the date, currency pair, reference value, source URL, and CSV or API path. Whether a source is accepted depends on your policy, adviser, auditor, and local authority; FXpeek does not provide tax or accounting advice.
Is the public FXpeek API free, and what are the limits?
The public JSON and CSV examples for supported pairs require no API key and are intended for lightweight lookup, spreadsheets, and prototypes. FXpeek does not publish a fixed public daily allowance; abusive or high-volume traffic may be limited.
Which currencies and dates does FXpeek cover?
The main public navigation highlights 15 fiat currencies, including USD, EUR, CNY, JPY, GBP, IDR, VND, and THB, plus supported USDT and USDC reference pairs. Public history is highlighted from 2015 onward, while the exact first available date varies by pair and source.
Workflow shortcuts
Popular pairs
Coverage
All currencies
USDEURCNYJPYGBPIDRVNDTHBPHPMYRHKDKRWSGDAUDCAD