Inflation Calculator – Adjust Money for Historical Inflation
Use this free online inflation calculator to see how the value of money changes over time. Adjust any amount between two years using consumer price index (CPI) data for dozens of global currencies.
Try the Inflation Calculator
Enter an amount and compare its value between two years using CPI inflation data.
Calculate Inflation
Results
$100.00 in 1776 is worth $3,643.00 in 2025
Inflation Analysis Charts
Annual Inflation Rate
Adjusted Value Over Time
Purchasing Power Over Time
This homepage calculator uses US Dollar (USD) by default. For other currencies, visit the calculators below.
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How the inflation calculator works
The calculator uses consumer price index (CPI) data to adjust amounts for inflation between two years. CPI measures how the average price of a basket of goods and services changes over time. By comparing CPI values for the start year and end year, the calculator estimates how much prices have risen and how much money you would need today to have the same buying power.
Why adjust money for inflation?
Inflation erodes the purchasing power of money over time. Comparing salaries, prices, or investments across decades without adjusting for inflation can be misleading. An inflation calculator helps you translate past amounts into today's terms, so you can make fair comparisons and better financial decisions.
Intuitive Interface
Navigate effortlessly through our user-friendly design for quick inflation calculations.
Detailed Analysis
Get comprehensive results with visual representations of your inflation calculations.
Global Coverage
Access inflation data for multiple currencies and countries worldwide.
How It Works
Enter an amount and select a year
Choose the target year for comparison
Get instant results and detailed analysis
Inflation calculator FAQ
What is an inflation calculator?
An inflation calculator adjusts the value of money between two years using historical inflation data. It estimates how much prices have changed so you can compare amounts in real terms.
What data does this inflation calculator use?
This calculator is based on consumer price index (CPI) data from official national statistics agencies and central banks where available. Coverage and start years vary by country and currency.
Which currencies are supported?
The tool supports dozens of global currencies, including USD, EUR, GBP, JPY, CAD, AUD and many others. Visit the "More currencies" page to browse the full list.
How accurate are the results?
Results are as accurate as the underlying CPI data. They provide a good approximation of changes in overall price levels, but they may not reflect specific goods, services or individual spending patterns.
Can I use this calculator for long-term comparisons?
Yes. The calculator is especially useful for comparing amounts over long periods, such as salaries from decades ago, housing prices, or investment returns in today's money.