Historical Exchange Rate Calculator
What a currency was worth on any past date back to 1999 — with the change since
ECB data goes back to 1999
European Central Bank reference rates. Dates that fall on weekends or holidays snap to the nearest prior business day, which is why the effective date may differ slightly from the one you picked.
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Quick summary
Pick a currency pair and a past date to see the official European Central Bank rate on that day, plus how much it has moved versus today. Useful for tax records, expense reports, invoices settled in the past, or just seeing how a currency has drifted. ECB data runs back to January 1999; weekend and holiday dates snap to the nearest prior business day.
Reviewed by Simple Calculators TeamLast reviewed
For planning only — not financial or tax advice. Results are estimates based on your inputs and the stated assumptions. Confirm important decisions with a qualified professional.
How to use this calculator
- Enter the inputs requested by the calculator.
- Choose the units or options that match your situation and review the assumptions.
- Run or update the calculation to see the result.
- Review the result, breakdown, and formulas shown on the page.
- Check the inputs, units, dates, and limitations before saving or sharing the result.
Frequently asked questions
How do I find the exchange rate on a specific past date?
Pick the two currencies, enter the amount, and choose the date. The calculator returns the official ECB reference rate for that day. For tax or accounting, note that authorities sometimes specify which rate source to use (e.g., the IRS accepts a consistent published source) — the ECB rate is widely accepted.
How far back does the historical data go?
To January 4, 1999, when the euro launched and the ECB began publishing daily reference rates. Dates before then aren't available from this source.
Why does the date sometimes shift to a day earlier?
The ECB only publishes rates on business days. If you pick a weekend or a European bank holiday, there's no rate for that exact day, so the result uses the most recent prior business day — the effective date shown reflects this.
What can I use historical rates for?
Converting a foreign invoice or expense on the date it occurred, valuing a past transaction for taxes, tracking how a currency has strengthened or weakened, or settling debts denominated in another currency at a historical point. The 'change since' figure shows the drift to today.
Key terms
- Reference Rate
- The ECB's official daily benchmark rate — the standard source for historical currency values.
- Effective Date
- The business day actually used when your chosen date falls on a weekend or holiday.
- Appreciation / Depreciation
- A currency gaining or losing value against another over time — what the 'change since' figure captures.
Methodology, sources & limitations
This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.
For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.