Anwar el-Assi, the commission's president, said el-Sissi received 23.78 million votes, while his sole rival, leftist politician Hamdeen Sabahi, got 3 percent of the vote.
After the announcement, several hundred people gathered in Cairo's Tahrir Square set off fireworks, cheered and sang pro-military songs.
El-Sissi's victory was never in doubt, but the career infantry officer had pushed for a massive turnout as well to bestow legitimacy on his ouster last July of Islamist President Mohammed Morsi and the ensuing crackdown on his Muslim Brotherhood and Islamist supporters.
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