What was the rate of cremation for the dead in Republican and Imperial Rome?

In the early Imperial period (27 BCE–c. 3rd century CE), cremation remained popular, but by the 2nd century CE, inhumation (burial) began to gain favor.

By the late Imperial period (4th century CE and beyond), inhumation had largely supplanted cremation as the primary method of body disposal.

Exact rates of cremation versus inhumation are difficult to determine, as they varied by region, social class, and time period, but the general trend was a decline in cremation and a rise in burial practices over the centuries.