Most currency pairs are priced through the U.S. dollar. Cross rates let you check whether a direct quote is fair and estimate conversion costs on less-traded pairs.
How to use the Cross Exchange Rate Calculator
- Currency A per 1 unit of the common currency
- Currency B per 1 unit of the common currency
- Amount in currency A
Results update as you type, and every field accepts the units shown in its menu.
How it works
Enter how many units of each currency equal one unit of the common currency, and an amount to convert.
Tips
- Enter figures for the same period and in the same currency.
- Exchange rates and prices change constantly – update them before you rely on a result.
- Use results as estimates and confirm important figures with the official source.
- Everything runs in your browser – try different values to compare scenarios.
Common mistakes to avoid
- Mixing gross and net figures.
- Using outdated rates.
- Treating rules of thumb as exact.
Inputs explained
| Field | What to enter |
|---|---|
| Currency A per 1 unit of the common currency | A number |
| Currency B per 1 unit of the common currency | A number |
| Amount in currency A | A number |
What each result means
- Cross rate: units of B per 1 A = [Currency B per 1 unit of the common currency]÷[Currency A per 1 unit of the common currency]
- Cross rate: units of A per 1 B = [Currency A per 1 unit of the common currency]÷[Currency B per 1 unit of the common currency]
- Amount converted to currency B = [Amount in currency A]×[Currency B per 1 unit of the common currency]÷[Currency A per 1 unit of the common currency]
Example values
How the main result changes when Currency A per 1 unit of the common currency changes and everything else stays at the example values above:
| Currency A per 1 unit of the common currency | Cross rate: units of B per 1 A |
|---|---|
| 0.46 | 608.6957 |
| 0.69 | 405.7971 |
| 0.92 | 304.3478 |
| 1.15 | 243.4783 |
| 1.38 | 202.8986 |
| 1.84 | 152.1739 |
Formula
If both are quoted per USD (units per 1 USD): A/B = (B per USD) ÷ (A per USD)If one is quoted as USD per unit (e.g. EUR/USD): convert to units per USD first (1 ÷ rate)Worked example
Inputs — Currency A per 1 unit of the common currency: 0.92; Currency B per 1 unit of the common currency: 280; Amount in currency A: 1,000.
Results — Cross rate: units of B per 1 A = 304.34783; Cross rate: units of A per 1 B = 0.003286; Amount converted to currency B = 304,347.83.
Frequently asked questions
What is a cross exchange rate?
An exchange rate between two currencies calculated through a third currency.
Why is the dollar used?
Most currencies trade most actively against the U.S. dollar.
Will my bank use this rate?
Banks add a spread, so you'll usually get a slightly worse rate.
What formula does the Cross Exchange Rate Calculator use?
If both are quoted per USD (units per 1 USD): A/B = (B per USD) ÷ (A per USD).