The CPI inflation calculator uses the Consumer Price Index for All Urban Consumers (CPI-U) U.S. city average series for all items, not seasonally adjusted. This data represents changes in the prices of all goods and services purchased for consumption by urban households Future Salary Inflation Calculator. Is your salary keeping up with inflation? What you need next year just to keep up. To use the calculator: 1) Input your current salary either weekly, monthly or annually. 2) Input the current annual inflation rate from the box to the right. Free inflation calculator that runs on U.S. CPI data or a custom inflation rate. Also, find the historical U.S. inflation data, learn more about inflation, experiment with other financial calculators, or explore hundreds of calculators addressing other topics such as math, fitness, health, and many more.