The Wellbeing Conversion Index ranks rich democracies on lived quality of life, and — the part no existing index publishes — on how efficiently each one converts national wealth into that quality of life.
Plenty of indices rank wealth, and a few rank wellbeing. The interesting question is the ratio: given what a country has, how much lived wellbeing does it actually deliver? Measured against what peers achieve at the same income, that's a defensible comparison rather than an opinion.
A neutral tool anyone can trust, with a light US-spotlight view. The ranking carries its message implicitly; we don't editorialize per country. Where a country wins, we show it in full — the honest wins are what make the losses believable.
~41 OECD members and partner economies — rich democracies compared with their actual peers, not a global average. That's a feature, not a limitation.
We use outcomes (life expectancy, not health spending) and the median over the mean wherever offered — including the wealth denominator (median household disposable income, not GDP per capita, which a rich top end inflates).
OECD (How's Life / Better Life, Income Distribution Database, Health and Employment statistics); WHO Global Health Observatory; World Bank (PPP conversion factors, PM2.5). Several OECD wellbeing measures derive from the Gallup World Poll as published by the OECD. Data used under each provider's terms. Full per-indicator provenance is on the methodology page.