Inflation Calculator

Project how prices rise — and how purchasing power falls — with inflation.

How the Math Works

The Inflation Calculator uses the compound interest formula to project how purchasing power changes over time. The formula future cost = amount × (1 + rate)^years calculates the equivalent value of money after accounting for inflation. Here, 'amount' is your initial sum, 'rate' is the annual inflation percentage expressed as a decimal (for example, 3% becomes 0.03), and 'years' represents the time period. By raising (1 + rate) to the power of years, we compound the inflation effect each year, showing how prices gradually increase and your money buys less than it once did.

Practical Applications

To use this calculator practically, first determine your starting amount and estimate the average annual inflation rate for your region and time period—often found in government statistics or financial reports. Enter these values along with how many years you want to project forward. For instance, if you're planning for retirement or budgeting for a major purchase in 10 years, you can calculate what today's $1,000 would be worth in future dollars, helping you set realistic savings goals and adjust your financial plans accordingly.

Day-to-Day Use

Understanding inflation's impact helps you make smarter financial decisions in everyday life. Whether you're budgeting for monthly expenses, planning a vacation, or saving for a home down payment, knowing how inflation erodes your money's value prevents unpleasant financial surprises. This calculator helps you ask better questions like 'How much should I start saving now?' or 'Will my current savings cover future costs?' By estimating future purchasing power, you can adjust your spending habits, seek higher-yield savings options, or simply adjust your expectations for future price increases on essentials like groceries, gas, and housing.

Worked example

$10,000 at 3% for 20 yr costs ~$18,061 then.

FAQ