USD to PLN exchange rate on 2026-09-17 Closing rate1 USD = 3.7867 PLNDay-over-day change: 0.63%Previous close: 3.7631More dataLive rate & chartMonthly summaryDownload CSVAvailable daily data: 2026-03-06 – 2026-09-17 Currency guides All USD rates All PLN rates PLN To USD