In Jainism, a sāgaropama (also spelled as sagropum or sāgaropam) is a unit used to measure extremely long periods of time.

1 sāgaropama = the time it would take to empty a well measuring 1 yojana (about 8-9 miles) deep and 1 yojana square, if a single drop of water is removed every 100 years.

To provide a numerical estimate, Jain texts provide this calculation:

• 1 sāgaropama = 10¹⁴ pūrvas
• 1 pūrva itself is an extremely large unit (much larger than billions or trillions of years).

In approximate modern terms, 1 sāgaropama is often considered to be about 10¹⁶⁷ years (that is, a 1 followed by 167 zeros).

Therefore, 1 sāgaropama = 10¹⁶⁷ years (approximate, according to Jain scriptures).

This concept is used in Jain cosmology to illustrate the vastness of time.