The length of a generation can vary depending on the context, but generally:
- In demographic and genealogical terms: A generation is typically considered to be about 20 to 30 years. This is roughly the average age at which people have children.
- In cultural or social terms: A generation might be thought of as the span of time during which a group of people are born and grow up, often around 25 to 30 years.
- In evolutionary biology: A generation can be much shorter or longer depending on the species.
Summary:
Context| Typical Length of a Generation
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Human demographic| 20–30 years
Cultural/social group| 25–30 years
Biological species| Varies widely
If you want a more specific answer for a particular context, feel free to ask!