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Calcimator

Currency Exchange Calculator

Convert between 160+ world currencies using live exchange rates. Pick any From and To currency and see the rate, inverse rate, and USD value.

This calculator converts an Amount from one currency to another using two live-updated rates: Exchange Rate (the To-per-From cross-rate) and a hidden From-per-USD rate used only for the USD reference figure. Converted Amount is Amount times Exchange Rate -- both inputs move it by an equal share, since it's a plain product of the two, so a larger Amount or a higher Exchange Rate each produce a roughly proportional increase in Converted Amount. Amount is the one input that actually moves Value in USD: that figure is Amount divided by the From-per-USD rate, a formula the on-screen Exchange Rate never enters into at all -- editing Exchange Rate changes only how many units of the To currency you receive, not the equivalent USD value of what you're converting. The reverse is true for Inverse Rate, which is always 1 divided by Exchange Rate: Amount plays no role in it whatsoever, no matter how much money you're converting. Exchange Rate auto-populates from a live feed when you pick a From/To currency pair, but you can type over it with your own rate to model a different quote, a bank markup, or a historical rate. This tool does not account for transaction fees, spreads charged by card networks or exchange services, or rate volatility between the moment you check and the moment you actually convert.

Convert

Results

Converted Amount
92
Exchange Rate
0.92
Inverse Rate
1.086957
Value in USD
$100.00
How to Use This Calculator
  1. Enter the Amount you want to convert.
  2. Pick the From and To currencies from the dropdowns (160+ live currencies).
  3. The exchange rate auto-updates to the live rate for that pair — or type your own to override it.
  4. Review the Converted Amount, Exchange Rate, Inverse Rate, and Value in USD.

How the result changes with Amount

AmountConverted Amount
100,000,00092,000,000
350,000,000322,000,000
649,999,999597,999,999.08
899,999,999827,999,999.08

What each input means

Amount
The amount to convert (in the From currency).
From Currency
Source currency for conversion.
To Currency
Target currency for conversion.
Exchange Rate
Auto-updates to the live From→To rate. Edit to override with your own rate.

How this is calculated

Worked example, using the default values

  1. Convert to USD
    USD = Amount / (From units per USD)
    100 / 1 = $100
  2. Apply cross-rate
    Converted = Amount × Exchange Rate
    100 × 0.92 = 92

Engine last updated .

Frequently Asked Questions

Why does Amount have no effect on the Inverse Rate?

Inverse Rate is calculated as 1 divided by Exchange Rate only -- the formula never references the Amount you're converting, so typing in a different amount changes Converted Amount and Value in USD but leaves Inverse Rate exactly where it was, however small or large your conversion is.

Does the Exchange Rate affect the Value in USD figure?

No -- Value in USD is calculated as Amount divided by a separate From-per-USD rate that updates from the live feed for your From currency, independent of the To currency or the on-screen Exchange Rate. Editing Exchange Rate changes how many units of the To currency you'd receive, not the USD-equivalent value of the amount you started with.

How much does raising the Amount change the Converted Amount?

Converted Amount is a straight product of Amount and Exchange Rate, so raising Amount by any percentage raises Converted Amount by that same percentage, holding the rate fixed -- exactly the same proportional effect that raising Exchange Rate by that percentage would have instead.

Can I override the live Exchange Rate?

Yes -- Exchange Rate auto-fills from a live feed the moment you choose a From and To currency, but it's a normal editable field, so you can type in your own rate to model a bank's marked-up quote, a historical rate, or a rate you were personally quoted.

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