How many ships are in the UNSC?

The United Nations Space Command (UNSC) has a vast and varied fleet, though the exact number of ships is not definitively stated in the Halo universe. Estimates suggest that the UNSC maintains thousands of vessels, including capital ships, frigates, and support craft. The fleet composition can change depending on the ongoing conflicts and missions, particularly during the Human-Covenant War and later engagements. For precise numbers, fans often refer to various Halo lore sources, but official counts can vary.