Inflation Calculator
The same amount of money can buy less over time. Explore how compounding changes prices and purchasing power.
Set your assumptions
Use any currency, consistently.
Your money over time
What your original 100.00 could buy
Worth 74.41 in today’s money after 10 years.
At a constant annual rate of 3%, a price of 100.00 becomes 134.39 after 10 years. An unchanged amount of cash loses 25.59% of its purchasing power.
Future price = original price × (1 + rate / 100)years
Purchasing power lost = [1 − 1 / (1 + rate / 100)years] × 100
What is this?
Inflation is a sustained rise in the general price level. Over time, each unit of currency buys fewer goods and services. Deflation (a negative rate) does the reverse. This calculator applies a constant annual rate to a sample price.
How to use it
Enter an original price, an annual rate, and a whole number of years. Results update as you type. The purchasing-power result assumes cash earns no interest. Actual inflation varies, and individual prices may move differently from the general price level.