US Inflation Calculator
BLS CPI-U, 1913 to present.
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FAQ
Where does this data come from?
Annual averages of the Consumer Price Index for All Urban Consumers (CPI-U, series CUUR0000SA0) published by the US Bureau of Labor Statistics. CPI-U is the most widely used inflation measure in the United States.
Why does the result differ from other calculators?
Most variation comes from which months are averaged. We use annual averages of monthly CPI-U values. Some calculators use only the December value, or use CPI-W (Urban Wage Earners) instead.
How is purchasing power calculated?
Future value = past amount × (CPI in target year ÷ CPI in original year). For $100 in 1990 → today: 100 × (322.1 / 130.7) ≈ $246.49.
How accurate is the current year?
The latest year reflects monthly CPI-U through the most recent BLS release. It is provisional and revised throughout the year as new monthly data is published.
Estimate only — not professional advice. Calculation uses BLS CPI-U series CUUR0000SA0 (US city average, all items). CPI-U is one of several inflation measures; PCE and the chained CPI track somewhat differently. For investment or contract decisions, consult a qualified professional. Full year-by-year table →
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