lookup · finance
Convert currencies with ECB exchange rates
Look up European Central Bank foreign exchange reference rates — latest, historical, or converted between any two ECB currencies — for 1 credit per call after your 20 free calls a day, with results returned within 25 seconds.
result
Press Run. The result lands here, made by the real tool.
1 credit · ≤25 s · no login · 20 free/day
Keys are stored in this browser only. A key lets you buy credits and keep going after the free runs.
How it works
- Choose an operation — latest rates, a conversion, or a historical series — then fill in the currency fields and, for conversions, an amount.
- Press Run.
- Read the JSON result, which shows the rate, the ECB date used, and for conversions the calculated output amount.
Limits
Each call must fit within 4.096 KB of input and completes within 25 seconds. Every visitor gets 20 free calls per day without logging in. After those, each call costs 1 credit drawn from prepaid credits on an API key.
Privacy
Your input is processed for the request and discarded immediately afterwards; it is not stored or used for any other purpose. Usage records retain only the time, tool name, status, duration, credits used, and a salted hash of the IP address.
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Call it from code
curl -sS -X POST 'https://data.voiddo.com/v1/currency_rates' \
-H 'Content-Type: application/json' \
-d '{"op":"convert","amount":100,"from":"EUR","to":"USD","date":"2026-01-02"}'20 calls a day need no key. Beyond that: one-time credit packs, $5 for 500 credits, $9 for 1,000 credits, $29 for 4,000 credits. Get credits · llms.txt · OpenAPI.
Questions
Where do the rates come from?
All rates are European Central Bank euro foreign exchange reference rates; the base currency in ECB data is EUR.
What happens if I request a weekend or public holiday date?
The tool automatically uses the previous available ECB business day and shows that date in the response.
How do I call this from code?
Send a POST request to https://data.voiddo.com/v1/currency_rates with a JSON body; a curl example is shown on this page.
What happens after my 20 free calls for the day?
Further calls that day require an API key with prepaid credits; each call costs 1 credit.
Is my input stored?
No — input is discarded after the request completes and is never kept or used for anything else.