Reverse Inflation Calculator

Use our Reverse Inflation Calculator to work out what something cost before prices rose — starting from today’s price — what an old price comes to today, or how much prices rose between two prices.

Enter the inflation as a total change over the whole period, or as a yearly rate over a number of years — the calculator compounds it for you. A price of $120 after a 20% rise was $100.00 before it. At 3% a year, something that costs $100 today cost $74.41 ten years ago — a 34.39% rise in all — and the results show the price year by year.

Choose Inflation to find the change between two prices: $80 to $92 is a 15% rise, and $3.00 to $4.50 over 15 years averages 2.74% a year. The results also show how much less a dollar buys after the rise — 16.67% less after a 20% rise — and work for falling prices too.

One average rate stands in for prices that change from year to year, and a single item may not follow general inflation, so treat the results as an estimate. To see how fast prices are rising for your own spending, use our Personal Inflation Rate Calculator; to see what your savings earn after inflation, our Real Interest Rate Calculator.