When do most scholars believe beowulf was written?

The Nowell Codex, which is the manuscript containing the poem Beowulf, is believed to have been made sometime in the 10th or early 11th centuries. As for the poem itself, it is impossible to tell exactly when it was composed. The fact that it draws on both the traditions of pagan Scandinavia and Christianity indicates that it was crafted over generations before being entered into the manuscript we have today.