ClarityHow to use this tool
- Enter amount in the source currency, from currency, to currency, requested date.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Amount in the source currency | Numeric value. Zero or positive. | 100 |
| From currency | Choose USD / EUR / GBP / JPY / CHF / CAD / AUD / NZD / CNY / INR / ILS / SEK / NOK / DKK / PLN / CZK / HUF / BRL / MXN / ZAR. | USD |
| To currency | Choose USD / EUR / GBP / JPY / CHF / CAD / AUD / NZD / CNY / INR / ILS / SEK / NOK / DKK / PLN / CZK / HUF / BRL / MXN / ZAR. | EUR |
| Requested date | Use a calendar date in year-month-day order. | 2024-01-02 |
Rates are requested when you calculate. No fixed live-rate result is shown here; read the rate date in your actual result.
The method, explained
Converted historical amount = amount × historical reference rate. The returned observation date is shown separately from the requested date.
If the historical rate were 0.85 EUR per USD, 200 USD would equal 170 EUR on that reference basis.
What to keep in mind
Dates begin in 1999; coverage varies by currency. Missing dates may use a preceding observation or return an error. This does not adjust for inflation.
Reference: Frankfurter API · European Central Bank reference rates
Common questions
Can I use this as an official tax rate?
Check the rate source and date convention required by your tax authority. This general tool does not choose a legal reporting convention.
What information is sent to the rate provider?
Only the currency pair and requested date. Amounts, fees and comparison prices stay in your browser.
Methodology maintained by ClarityKit. How these tools are built and checked.