How long are people like you likely to live? And what could change it?

We're building a free calculator that shows your likely lifespan as a range and the everyday changes that could add the most years.

What we're building

A range, not a date
You start from the average for your country, age and sex. Each question you answer, about things like smoking, activity and weight, redraws a curve showing your chance of reaching each age. It also shows the age that half of people like you live beyond.
The changes that matter most for you
We rank the habits you could change by the years you could gain, so you can see where effort pays off.
Every number has a source
It's built on official mortality data (the ONS in the UK, the United Nations worldwide) and published research. We'll show our sources and our method openly.
Your answers stay on your device
The calculation runs in your browser. Your answers never leave your phone. There's no account to make and no ad trackers.

It will be personalised for the UK and US first, with country averages for the rest of the world.