Nicholls, who used up two lives early in his innings, had a third on 92 when he was dropped by Azhar Ali and progressed to reach 100 with a cover drive to the boundary.
New Zealand head to Auckland on Tuesday to begin preparations for three Twenty20 matches against Pakistan before a two-test series begins in Mt. Maunganui on Dec. 26.
The coach added he had little to complain about from the demolition of West Indies at Seddon Park, which had also given them some options going forward.