Currency Exchange Calculator
Convert between 15 major world currencies using reference rates or your own exchange rate, with a full rate table.
Currency Exchange Calculator — input your values
What does this financial calculator do?
This currency exchange calculator converts an amount between 15 major world currencies. It uses approximate reference rates that it derives from the table of per-US-dollar values, so you can pick any pair — USD to EUR, JPY to GBP, and so on.
You can override the rate with a live quote from your bank for a precise conversion, and you also see the equivalent in US dollars. The full reference table is included for quick comparison of all 15 currencies.
Formula and variables
Rates are reference estimates, not live market quotes, and banks add a margin on top of the interbank rate.
| Symbol | Meaning |
|---|---|
| Amount | Money to convert, in the base currency |
| Per USD | Units of each currency per 1 US dollar |
| Converted | Result in the target currency |
Worked example
Converting $500 US dollars to euros at the reference rate.
- EUR per USD: 0.92.
- Rate: 1 USD = 0.92 EUR.
- 500 × 0.92 = 460 EUR.
- The equivalent in USD is $500.
Answer: $500 converts to about 460 euros.
Tips and common mistakes
Tips
- Banks and exchange kiosks add a margin to the market rate — compare offers, as the difference can be 3% or more.
- For large transfers, online specialist services usually beat airport kiosks and branch offices.
- Check the rate twice: once before and once at the moment of the transaction, since rates move constantly.
- When traveling, a no-foreign-transaction-fee card can be cheaper than exchanging cash.
Common mistakes to avoid
- Assuming rates are static — reference rates here are estimates and real rates change by the second.
- Converting by guessing an inverse rate when the pair is quoted the other way around.
- Forgetting the bank's margin, which makes the rate you receive worse than the headline rate.
Currency Exchange Calculator — frequently asked questions
Are these exchange rates accurate?
They are approximate reference rates for estimation — useful for planning, but not for actual transactions. Use a live rate from your bank or a currency service for the real conversion.
How do I convert from a currency that is not the US dollar?
The calculator derives any pair from the per-US-dollar reference values: rate = target per USD ÷ base per USD. For example, EUR to GBP = 0.79 ÷ 0.92 ≈ 0.859.
Why do banks quote different rates than I see online?
Banks add a margin to the interbank market rate to cover costs and profit, so the rate you receive is always less favorable than the headline rate.
What is the best way to convert currency for travel?
A credit card with no foreign transaction fees usually gives the best rates. For cash, withdraw from ATMs abroad rather than airport kiosks, and decline the kiosk's own conversion when possible.
Can I enter my own exchange rate?
Yes — the rate input lets you override the reference rate with the live rate you are actually quoted, giving a precise conversion for your transaction.
Which currencies are supported?
Fifteen major currencies: USD, EUR, GBP, JPY, CNY, CAD, AUD, CHF, INR, MXN, BRL, KRW, SGD, NZD and AED.