On 13 June 2018, Kerr made the women's ODI, and became the youngest cricketer, male or female, to score a double century in One Day International cricket, when she scored 232
not out against
Ireland. The double century was also the third-highest individual score, male or female, in an ODI, second-highest by a
New Zealander and highest in a
Women's ODI. Later in the same match, she also took five wickets for 17 runs, her
first five-wicket haul in WODIs. In August 2018, she was awarded a central contract by
New Zealand Cricket, following the tours of
Ireland and
England in the previous months. In October 2018, she was named in New Zealand's squad for the
2018 ICC Women's World Twenty20 tournament in the West Indies. Ahead of the tournament, she was named as the player to watch in the team. In March 2019, she was named as the ANZ International Women's ODI Player of the Year at the annual New Zealand Cricket awards. In January 2020, she was named in New Zealand's squad for the
2020 ICC Women's T20 World Cup in Australia. In February 2022, she was named in New Zealand's team for the
2022 Women's Cricket World Cup in New Zealand. In April 2022, she was signed by the
London Spirit for the
2022 season of
The Hundred at a salary band of £25,000. In June 2022, Kerr was named in New Zealand's team for the
cricket tournament at the
2022 Commonwealth Games in
Birmingham, England. In the inaugural season of the
Women's Premier League in 2023, Kerr was bought by
Mumbai Indians at the price of ₹1 Crore. In March 2024, in the absence of
Sophie Devine. Kerr was named as the captain of
New Zealand in
One Day International for home series against
England. In September 2024 she was named in the New Zealand squad for the
2024 ICC Women's T20 World Cup. In the
2024 Women's T20 World Cup final against
South Africa, her 43 off 38 and 3/24 led her team to win their maiden
Women's T20 World Cup and she was the
Player of the Match in the finals. She became the first female player to named as player of the final and player of tournament in the
ICC Women's T20 World Cup. Kerr was named in the New Zealand squad for their
ODI tour to India in October 2024. She tore her left quadriceps muscle in the first match and was subsequently ruled out of the rest of the series. She was among the four player shortlists for the Women’s Cricketer of the Year and Women's T20I Cricketer of the Year in the 2024 ICC Awards In 2025, Amelia Kerr became one of
The Hundred's first-ever direct signings, joining the
Manchester Originals for the
2025 The Hundred season at a salary band of £65,000. In 2026, Kerr was announced as the White Ferns' captain, succeeding Devine, who stepped down after the previous year's
World Cup. In March 2026, Kerr took a
hat-trick in a
WODI against
Zimbabwe, becoming the third New Zealand women's player to achieve the feat. In April 2026, Kerr scored 179
not out in a
WODI against
South Africa, taking her team to the highest successful run chase in the history of women's ODI's. ==Personal life==