Bank of Japan Gov. Haruhiko Kuroda said confidence in the radical monetary easing experiment he has launched is spreading among the Group of 20 finance chiefs.

"Understanding for the BOJ's qualitative and quantitative easing is deepening," Kuroda said Saturday in Moscow after finance ministers and central bankers from the world's 20 largest economies wrapped up a two-day meeting.

"While it takes time to achieve the 2 percent inflation target (adopted by the BOJ), monetary easing is steadily achieving" the goal of boosting the domestic economy, he said.