About This Calculator

I built this tool because I wanted to understand my own time better — and I couldn't find anything that showed it to me in a way that actually landed. Most calculators give you a number. A number alone doesn't create perspective.

What creates perspective is seeing your life as weeks on a grid. When you see the golden squares — weeks already lived — sitting next to the empty ones still to be written, something shifts. That's the moment this tool was built for.

Everything here is built on public domain data from the U.S. Social Security Administration and the CDC — the same actuarial tables used by financial planners, insurers, and researchers. The lifestyle adjustments are drawn from peer-reviewed longevity research. I built this as a solo project because I thought it was worth building — the calculator is free and always will be. If I share resources or recommendations down the road, it'll be because I believe they could help someone (including myself).

All calculations happen in your browser. No personal data is collected or stored — ever. I hope this tool does for you what it did for me: not create anxiety, but create clarity.

Data sources are listed on the Methodology page.