CostLens
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How We Calculate Costs

Transparency about our estimation model and its limits

The model

Every city page starts from a national baseline: estimated average costs for twelve expense categories (rent, groceries, dining, transport, utilities, internet, leisure) plus an average net salary for that country.

The baseline is then adjusted by a city multiplier based on population: larger cities cost more, driven mainly by housing. National capitals receive an additional premium. Cities without population data default to a small-town multiplier. Rent scales more steeply with city size than other categories, reflecting how housing markets behave in practice.

What the numbers are

They are planning estimates — useful for comparing cities against each other, budgeting a move at a rough level, and understanding relative affordability. Rankings between cities are more reliable than any single absolute figure.

What the numbers are not

They are not live market prices, not crowdsourced, and not a substitute for checking current listings before signing a lease or accepting a salary. Real prices in any city vary by neighborhood, season and personal lifestyle — sometimes widely.

Currency

Amounts are shown in the local currency and US dollars using approximate fixed exchange rates. Exchange rates move; the USD figures are indicative only.

Data sources

City names, coordinates, states and populations come from open geographic datasets. Cost baselines are compiled from publicly available price references and adjusted periodically.