Ladybugs (Coccinellidae) typically live about one year as adults, with their full life cycle—from egg to adult—often taking around one to two years depending on species and environmental conditions. In temperate regions, adults may overwinter in diapause and survive through winter, resuming activity in warmer months, which can extend the overall time from egg to death for some individuals. Key points to know:

• Adult lifespan: roughly 1 year under average conditions; in some cases, adults may live only a few months, while others can live longer if conditions are favorable.
• Life stages: egg, larva, pupa, and adult. The larval and pupal stages together typically last a few weeks to a couple of months, depending on temperature and food availability.
• Variability by species and environment: warmer climates and abundant prey (aphids) can support longer lifespans and even multiple generations in a year for some species, whereas harsher conditions or pesticide exposure can shorten lifespans.
• Overwintering: many species survive winter in a dormant state (diapause); if they survive the season, they may re-emerge in spring and continue to live as adults for several more months.

If you’d like, I can tailor this to a specific ladybug species in your area or explain how indoor vs outdoor environments might affect lifespan.