Inflation Calculator
See how inflation changes the buying power and future cost of money over time.
Results update as you type.
About this calculator
Inflation erodes what money can buy: a fixed amount buys a little less each year. This calculator projects both the future cost of something priced today and the shrinking buying power of a fixed sum, using a constant annual inflation rate compounded over the period you choose.
Frequently asked questions
How does the inflation calculation work?
Future cost = amount × (1 + rate)^years, so something that costs 1,000 today costs about 1,344 after 10 years at 3%. Buying power works the other way: amount ÷ (1 + rate)^years, so 1,000 will only buy about 744 worth of today’s goods.
Where do I find the inflation rate to use?
Use your country’s consumer price index (CPI) figure — often around 2–3% in the long run for developed economies. For planning, enter the average rate you expect over the whole period, not a single year’s spike.
Results are estimates for general guidance only, not financial, medical or tax advice.