Every second, the Sun converts about 700 million tons of hydro | Science & Technology

Every second, the Sun converts about 700 million tons of hydrogen to 695 million tons of helium and 386 billion billion megawatts of energy (see also e=mc2 fact). It's been doing this for about 4.5 billion years and will keep going for another 5 billion years before growing to a red giant and gobbling up the Earth.