U.S. Treasury yields trended lower after the statement and on Thursday the 10-year yield slipped further and the real yield -- adjusted for inflation -- tumbled to a new record low around minus 1.175%.
By 1115 GMT, the dollar inched 0.2% lower against a currency basket =USD at 92.05, down for the fourth straight day.
"We saw the dollar weaken overnight and that's people taking profit on long dollar positions," said Peter Kinsella, head of FX strategy at UBP.
He said it appeared likely the Fed would commence tapering around year-end with rate rises starting in 2023.
"Mr Powell told us what we already knew. We got no new indication on timing of taper or rate hikes and what that means is that the payrolls data will be pretty important for the next two-three months," Kinsella added.
The dollar moves allowed the euro to edge up to $1.188, a two-week peak.
The Australian and New Zealand dollars, reliant on world and Chinese economic growth, extended gains made on Wednesday, adding more than 0.4%, though the Aussie was capped by concerns a lengthening COVID-19 lockdown in Sydney would drag on the national economy.
The Canadian dollar also rose as much as 0.6% to two-week highs Sterling, which has been surging on optimism over the re-opening of the British economy, touched a one-month high of $1.397.
Dust was settling after the storm triggered by Beijing's decision to tighten curbs on the for-profit tutoring sector, soon after its campaign against tech giants and new regulations for home-grown companies looking to list overseas.
China's Securities and Regulatory Commission (CSRC) on Wednesday held a meeting with executives of top global investment banks to calm financial markets nerves, people familiar with the matter told Reuters.
The offshore-traded yuan rose 0.4% and an emerging currency index hit two-week highs, up 0.6%.
Kinsella did not anticipate much yuan weakening from here
"It's important to remember that China still has a closed capital account so they can control what the yuan does. We will go back to where we were when people get more relaxed on the regulatory outlook," he added.
Global COVID-19 cases remain a concern for investors, although the safe-haven Japanese yen and Swiss franc were both lower on Thursday.
(Reporting by Sujata Rao; Editing by Kim Coghill and Mike Harrison) ((firstname.lastname@example.org ; +44 207 542 6176/020 7536 7473/44 7990567646))