Exchange Rate Calculator

Convert an amount between two currencies using a quoted rate, and see how a markup or conversion fee changes what you actually receive. Enter your numbers and press Calculate.

Written by TopicDrill Editorial Team·Updated June 2026

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How the exchange rate calculator works

Converting money is simple multiplication. The calculator takes your amount in the source currency and multiplies it by the exchange rate to get the value in the target currency. If you add a fee or markup, it subtracts that from the result so you see the realistic amount you would actually receive, not just the textbook figure.

It also shows the effective rate, which folds the fee back into a single number you can compare across providers, and the inverse rate, so you can quickly convert in the other direction.

A quick example

Convert $1,000 to euros at a rate of 0.92 with a 1% conversion fee. The raw conversion is 920 euros, the fee is about 9.20 euros, and you receive roughly 910.80 euros. That works out to an effective rate near 0.9108 per dollar.

Things to keep in mind

Live rates move constantly, so use a current quote for anything important. Providers differ in how they charge, some build the margin into the rate and some add a separate fee. For mid-market reference rates, the Federal Reserve publishes daily figures. Browse all of our free calculators for more.

Frequently asked questions

How does an exchange rate work?

An exchange rate tells you how many units of one currency you get for one unit of another. If the USD to EUR rate is 0.92, then 1 US dollar buys 0.92 euros, so $100 converts to 92 euros before any fees.

What is the difference between the rate and the effective rate?

The quoted rate is the headline price of one currency in another. The effective rate is what you actually get after a markup or conversion fee is subtracted. A 1% fee on a 0.92 rate gives an effective rate closer to 0.9108, which is the figure that matters for your wallet.

Why is the rate I get worse than the one I see online?

Published mid-market rates are wholesale prices banks trade at. Retail providers add a margin, a flat fee or both, so the rate you receive is usually a little worse. Enter that markup in the fee field to see the realistic amount you will receive.

How do I reverse a conversion?

To convert the other way, use the inverse rate. If 1 USD equals 0.92 EUR, then 1 EUR equals 1 divided by 0.92, or about 1.087 USD. The calculator shows this inverse rate beneath the result.

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