What was the thrust of the Saturn V's first stage?

The Saturn V’s first stage produced about 7.5 million pounds-force of thrust.

This first stage, called the S-IC, used five enormous F-1 engines burning kerosene and liquid oxygen. Together they generated the power needed to lift the fully fueled Saturn V from the launch pad and begin its climb through the atmosphere. The stage burned for roughly two and a half minutes before separating.

The figure refers to the combined thrust of the five first-stage engines, not the output of one F-1. Each engine produced roughly 1.5 million pounds-force, making the F-1 one of the most powerful single-chamber rocket engines ever flown. After the S-IC separated, the Saturn V’s S-II second stage took over with five J-2 engines.

A common mix-up is confusing first-stage thrust with the rocket’s total mass or with later-stage thrust. The 7.5-million-pound figure is the standard rounded value for the first stage at liftoff.