"We owe him an open mind and chance to lead," Clinton said in her first speech since the loss, adding it is "our responsibility as citizens is to continue to build a fairer America."
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"Last night I congratulated Donald Trump and offered to work with him on behalf of our country. I hope that he will be a successful president for all Americans," Clinton told supporters and staff at a Manhattan hotel.
She did not make history in the US election by becoming the country's first female president, but says in her concession speech that "someday someone will."
"I know we have still not shattered that hardest, highest glass ceiling, but someday someone will," Clinton says.
She went on to tell "all the little girls watching" that they are "valuable and powerful and deserving of every chance and opportunity in the world."
"This is painful and it will be for a long time, but i want you to remember this - our camp was never about one person or one election. It was about building an America that in inclusive and big-hearted."