This date falls on a weekend. Interbank FX markets don't trade then, so this is Friday's closing rate carried forward, not a fresh weekend quote.
Rates aggregate roughly 84 central banks and reference sources (via the Frankfurter API), not only the ECB — the source can differ by currency and day.
| Amount | Value |
|---|---|
| 1 USD | 6.39 |
| 5 USD | 31.93 |
| 10 USD | 63.86 |
| 20 USD | 127.72 |
| 50 USD | 319.31 |
| 100 USD | 638.61 |
| 500 USD | 3,193.05 |
| 1,000 USD | 6,386.10 |
| 5,000 USD | 31,931 |
| 10,000 USD | 63,861 |
| 2018-05-23 | 6.3776 |
| 2018-05-24 | 6.3838 |
| 2018-05-25 | 6.3854 |
| 2018-05-26 | 6.3859 |
| 2018-05-27 | 6.3861 |
| 2018-05-28 | 6.3914 |
| 2018-05-29 | 6.4072 |
| 2018-05-30 | 6.4203 |
| 2018-05-31 | 6.4099 |