Unit Converter
Convert between common units of length, mass, and area.
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Currency Converter
Convert currencies using dated reference exchange rates.
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How to use currency converter
- Enter a nonnegative Amount and select From currency and To currency.
- Select Convert / calculate and read the source rate date with the result.
- Compare the reference conversion with your provider's actual rate and fees.
Work through an example
Use dated Frankfurter reference rates, check the quoted direction, and keep provider fees separate from a planning conversion.
Read a currency conversion together with its rate date →Formats, privacy, and practical limits
Rates are public reference rates from Frankfurter, not live trading quotes. Requests include currency codes; no personal financial data or API key is sent. A source date is always shown.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Is the displayed amount a live transaction quote?
No. It uses dated Frankfurter reference data. Banks and payment services may apply different rates and fees.
What happens when rate requests fail?
A valid previously fetched rate from the current tab session may be reused with an explicit warning. Without one, the tool reports an error instead of substituting an estimated rate.