Earth Online answers one question: if your income were placed on the world income distribution, where would it land? Type a daily amount and you get a percentile, an estimated global rank, and a blunt assessment.
We use the World Bank's Poverty and Inequality Platform (PIP) world aggregate for 2023, at 2021 purchasing power parity. The measure is household per-capita consumption or income — not individual salary.
Your income is interpolated (log scale) between the World Bank's published thresholds to estimate the share of the world population living below it. That share, multiplied by world population, gives the estimated rank.
Every salary page shows a worldwide percentile and a percentile within your own country. The worldwide number compares you with 8 billion people; the national number compares you with households in your country, where prices, taxes and rent are the same as yours. The first is flattering, the second is useful.
The national figure comes from the World Bank's per-person income distribution for that country, scaled to a typical household size. For the eleven countries we cover, the implied median household income lands within a few percent of the official national statistic.
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