Fraction of history

Figure out what fraction of history you have lived through

Brian O’Meara


September 1, 2023

On mastodon, Marius Gunderen, posted:

“It’s wild to think about how short human history is. For example, the iron age started approximately 1200BC, which means that if you are 32 years old you have been alive for 1% of the time humans have used iron. If you are 54 years old then you have lived through 1% of horses being domesticated, the wheel being used for transport, written language and living in towns.”

I thought it would be interesting educationally to do this with many events. Enter a human age in years below to do this, then click somewhere outside the box:

Age in years:

Been alive for what percentage of time since:

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BibTeX citation:
  author = {O’Meara, Brian},
  title = {Fraction of History},
  date = {2023-09-01},
  url = {},
  langid = {en}
For attribution, please cite this work as:
O’Meara, Brian. 2023. “Fraction of History.” September 1, 2023.