The dollar rose on Wednesday after its biggest fall in a month the previous session, while sterling gained in response to minutes from the Bank of England's last meeting that suggested some policymakers support higher interest rates.
The yen held its ground against the dollar and strengthened against the euro after Bank of Japan Governor Haruhiko Kuroda on Tuesday said he expected inflation to accelerate and brushed off the idea of more monetary stimulus.
The currency market has been listless this week as Greece's debt crisis has waned and traders ponder the timing of a Federal Reserve rate increase this year, analysts said.
"There's not that much direction for the market," said Charles St-Arnaud, currency strategist at Nomura Securities International in New York. "There's a feel of dollar strength with commodity prices falling. There was some risk aversion overnight."