How many people emigrated from Ireland in the famine?

During the Great Famine in Ireland, which lasted from 1845 to 1852, approximately 2.5 million Irish people emigrated from Ireland. This mass emigration was caused by the severe food shortages, poverty, and disease that resulted from the potato blight that affected the country's main food crop. People fled Ireland in search of better opportunities and a more stable life elsewhere, mainly in the United States, Canada, Great Britain, and other countries.