Years ago I watched Neil deGrasse Tyson explain how long one billion seconds actually is. It stuck with me.

It is longer than it sounds — 31.7 years.

When I was getting close to my own milestone, I decided to make my own at onebillionseconds.io! It opens with numbers that put life in perspective, then lets the numbers get personal.

---

References:

• meandeviation.com — Life Counter
• zertrin.org — Giga Second
• brainbashers.com — One Billion Seconds
• brownspaceman.com — Billionth Second
• billionbirthday.com
• freecalculator.io — Billions of Seconds
• tigre-bleu.net — Giga Second
• Wait But Why — Your Life in Weeks
• bryanbraun.com — Your Life in Weeks
• weeksoflife.com
• lifecalendar.io
• Robert Waldinger — Counting the Days