In Jain tradition, Mahavir Swami is said to have had 27 bhavs (births/lives) before his final birth as Bhagwan Mahavir. However, the exact lifespan of each of those 27 bhavs is not commonly given in a single standard, universally fixed list; most Jain retellings identify the type of birth and spiritual progress in each bhav rather than an exact number of years. The commonly shared account is that the 27th and final birth was as Mahavir Swami, in which he attained keval jnana and later moksha. ( jainknowledge.com)

So, if you are asking for the exact age in each bhav, that information is not consistently preserved in the same form across Jain sources and traditions. What is consistently stated is:

• 27 total bhavs before final liberation. ( jainknowledge.com)
• Final birth as Mahavir Swami ended at the age of 72 years. ( jainknowledge.com)

If you want, I can give you the full 27-bhav list in order with the name and nature of each birth in a clean Jain format.