USD to CZK converter
Rates from the ECB, 28 September 2026. Type an amount in either currency and the other one updates as you type, or type your bank's rate to see what you would get.
- Czech koruna (CZK)
- 21.44
1 USD = 21.44 CZK, at 1 USD = 21.4423 CZK. The ECB reference rates of 28 September 2026 give 1 USD = 21.4423 CZK.
- Inverse: USD per 1 CZK
- 0.0466368
Czech koruna (CZK): 21.44. 1 USD = 21.44 CZK, at 1 USD = 21.4423 CZK. The ECB reference rates of 28 September 2026 give 1 USD = 21.4423 CZK.
How to calculate
Converts US dollar (USD) to Czech koruna (CZK) and back at the ECB euro reference rates of 28 September 2026, or at your own rate.
Example with the default inputs (US dollar (USD) 1, Rate: CZK per 1 USD 21.4423): 1 USD = 21.44 CZK, at 1 USD = 21.4423 CZK. The ECB reference rates of 28 September 2026 give 1 USD = 21.4423 CZK.
Formula: CZK = USD × rate. The ECB rate is a cross rate: (CZK per euro) ÷ (USD per euro), to 6 significant figures.
- The default rate, 1 USD = 21.4423 CZK, is worked out by this site from the ECB euro reference rates of 28 September 2026: 24.397 CZK per euro ÷ 1.1378 USD per euro, rounded to 6 significant figures. The ECB does not publish rates between two non-euro currencies.
- The ECB publishes its reference rates for information purposes only, not for transactions. Banks and cards add a margin or a fee; type their rate to see what you would get.
- Amounts are rounded to 2 decimal places, without trailing zeros (24.4 means 24.40), and rates show up to 7 significant figures; the calculation keeps full precision.
Worked examples
Each example is checked against the calculator on every build.
- US dollar (USD) 100, Rate: CZK per 1 USD 21.44 gives Czech koruna (CZK) 2,144.Source: hand calculation: amount × rate, at the ECB rate of 28 September 2026 for USD to CZK (21.4423) rounded to 4 significant figures
- Czech koruna (CZK) 100, Rate: CZK per 1 USD 21.44 gives US dollar (USD) 4.664179.Source: hand calculation: amount × rate, at the ECB rate of 28 September 2026 for USD to CZK (21.4423) rounded to 4 significant figures
- US dollar (USD) 100, Czech koruna (CZK) 2,144 gives Rate: CZK per 1 USD 21.44.Source: hand calculation: rate = result ÷ amount
Other questions people ask
How much is 1 USD in CZK?
At the ECB euro reference rates of 28 September 2026, 1 USD = 21.4423 CZK, and 1 CZK = 0.04663688 USD.
Where does the USD to CZK rate come from?
The ECB quotes every currency against the euro only. On 28 September 2026, 1 euro bought 1.1378 USD and 24.397 CZK, so 1 USD = 24.397 ÷ 1.1378 = 21.4423 CZK. This cross rate is worked out by this site; the ECB does not publish it.
Can I use this rate at my bank?
Not exactly. The ECB publishes its reference rates for information purposes only and strongly discourages their use for transactions. Banks, cards, and exchange offices add a margin or a fee. Type the rate they offer into the rate box to see what you would receive.
How often does the rate change?
The ECB sets one reference rate per currency on each TARGET working day, at about 16:00 CET. This page shows the rates of 28 September 2026; they change when the site is rebuilt with a newer copy.