Inflation Calculator
What today's money will be worth tomorrow.
Inflation quietly taxes every dollar you don't invest. Enter an amount, an annual inflation rate and a time span to see what that money will buy in the future — or what a future price costs in today's dollars. It's the reality check behind every savings plan.
How it's calculated
Future cost = amount × (1 + rate)^years; buying power = amount ÷ (1 + rate)^years — two sides of the same compounding coin.
Frequently asked questions
What is purchasing power?
It's what your money can actually buy. If inflation runs 3% for 10 years, $100 today buys what $134 will buy then — or equivalently, today's $100 will only feel like $74 in future spending power.
What inflation rate should I use?
Many planners use 2–3% for long-run estimates in stable economies, matching central bank targets. For a stress test, try 4–5% and watch how much harder your savings have to work.
Does this use real historical inflation?
No — it projects a constant rate you choose. Real inflation bounces around year to year; this calculator shows the cumulative effect of your assumed average.