After bowling out the tourists for 232, the Blackcaps easily reached their target with eight wickets in hand.
Martin Guptill starred for the hosts, smashing an unbeaten 117.
The second match will be played at Christchurch on Saturday.
Search ARN News Centre
New Zealand win first ODI against Bangladesh
More from Sport
-
UAE, Saudi Arabia set for Gulf Cup final showdown
The UAE face hosts Saudi Arabia in the final of the 27th Arabian Gulf Cup on Tuesday in Jeddah, with both sides aiming to end long waits for regional football's most prestigious title.
-
Djokovic wins China Open as de Minaur retires injured
Novak Djokovic won his seventh China Open title after Australia's Alex de Minaur retired with a groin injury during the final on Tuesday.
-
India crush West Indies in first T20
Captain Shreyas Iyer hit a century as India beat the West Indies by eight wickets in the first Twenty20 of their five-match series in Lucknow on Tuesday.
-
Alcaraz sinks Lehecka to retain Japan Open crown
Defending champion Carlos Alcaraz defeated unseeded Czech Jiri Lehecka 7-6(4) 6-4 in the Japan Open final on Tuesday to retain his title and continue his resurgence after a wrist injury.
-
McIlroy set for Dubai return at DP World Tour Championship in November
Seven-time Race to Dubai champion Rory McIlroy will tee it up at the DP World Tour Championship from November 12-15 at Jumeirah Golf Estates in Dubai, as he bids to draw level with Colin Montgomerie's record haul of eight Harry Vardon Trophies.
