His many popular German-language publications include Handbuch der Ägyptischen Königsnamen, 2nd edition (Mainz, 1999) and Chronologie des Pharaonischen Ägypten or "Chronology of the Egyptian Pharaohs," MÄS 46 (Philip von Zabern, Mainz: 1997), which is regarded by academics as one of the best and most comprehensive books on the chronology of Ancient Egypt and its various Pharaohs.

In 1953, he personally inspected and recorded the Nile Quay Texts at Karnak before they were permanently lost or damaged through erosion.

Throughout his academic career, Beckerath maintained a high scholarly standard in his publications and articles and dispelled many previously held assumptions or beliefs by meticulously analyzing the original evidence.

Beckerath aptly notes that this new evidence casts serious doubt upon the idea that the damaged Sed Jubilee date in Osorkon II's Bubastis Festival Hall should be read as Year 22, rather than Year 30 of this pharaoh's reign (the latter reading is possible with some restoration of the damaged numeral) as Edward Wente noted in his 1976 JNES review of Kitchen's TIPE book.

Beckerath also advocated the view that Shoshenq II enjoyed an independent reign at Tanis in his book Chronologie des Pharaonischen Ägypten.