Inflation Calculator
See how purchasing power changes over time using CPI data.
$100.00 in 1990 is equivalent to $240.24 in 2024
Total Inflation
140.2%
Avg Annual Rate
2.61%
Purchasing Power Lost
58.4%
Purchasing Power of $100.00 (in 1990 dollars) over time
Frequently Asked Questions
What CPI data does this use?
This calculator uses the US Bureau of Labor Statistics (BLS) Consumer Price Index for All Urban Consumers (CPI-U), the most widely used inflation measure. Data runs from 1913 to 2024.
What does "purchasing power" mean?
Purchasing power is the real value of money in terms of goods and services it can buy. When prices rise (inflation), the same amount of money buys less.
Why does inflation matter for retirement?
At 3% inflation, $1M today is worth only about $412,000 in 30 years. Planning with inflation-adjusted figures ensures your savings will cover your future needs.
What was the highest inflation year in the US?
The worst modern inflation was in 1979–1980, when CPI rose over 13% in a year due to oil shocks. Recent highs were in 2022 (~8%) driven by post-pandemic supply disruptions.
Does this support currencies other than USD?
Currently, this calculator uses US CPI data. Inflation data for other countries (UK, EU, TR) is available in our downloadable Excel templates.