Historical Exchange Rate Lookup
Convert an amount using a chosen historical date\u2019s reference exchange rate. Useful for tax basis, travel reimbursement, or financial reporting.
Inputs
Converted amount
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Historical rate
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Inverse rate
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Year used
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About Historical Exchange Rate Lookup
Where official rates come from
For US tax filings: IRS yearly average rates table. For UK: HMRC. For EU: ECB reference rates. This calculator uses annual averages — for exact day rates, see your central bank\u2019s archive.
Why exchange rates move
Interest rate differentials (a country with higher rates attracts capital), inflation differentials, trade balances, political stability, central bank intervention.
Spot vs forward
Spot rates apply to immediate transactions. Forward rates price in interest-rate differentials between currencies. For tax purposes, use spot rates from the transaction date.