Kerr is now the second women and seventh overall cricketer to go past the 200-run mark in one-day global cricket.
The 17-year-old, whose average was just 29 going into the match, blasted 31 fours and two sixes to surpass the 229 scored by Australia's Belinda Clark against Denmark in 1997 - three years before Kerr was born.
DUBLIN: New Zealand´s Amelia Kerr hit a world record 232 not out in the third one-day worldwide against Ireland on Wednesday and then took five wickets to complete a remarkable day for the 17-year-old.
It is the third-highest ODI total ever, beaten only by India's Rohit Sharma (264) and Kiwi Martin Guptill's 237 against the West Indies in 2015.
At 17 years and 243 days, Kerr is the youngest double-centurion in global men's or women´s cricket.
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"It's pretty surreal. The day couldn't go any better". I'm definitely going to use that bat again.
"We're not surprised she's produced a performance like this - probably not as young, I didn't think it would happen as young to be honest - but we're really proud".
"I didn't get off to a flyer, I had to work hard".
The Tawa College student has made her name as a bowler of some talent but wants to be regarded as an allrounder.
Kerr was also involved in the second-highest partnership in women's ODI cricket, as she and Leigh Kasperek (113) put on a mammoth 285 runs for the second wicket. Kerr reached her double-century off 134 deliveries with a four in the 46th over. The White Ferns are about to play England and South Africa in a tri-series.