Inflation Calculator
See how an assumed inflation rate erodes or grows purchasing power over time.
This projects a constant assumed rate — it isn't a lookup against real historical CPI data. Actual inflation varies year to year, so treat this as a planning estimate.
Equivalent value today
$1,344
Total change over period
+34.4%
Equivalent value over time
For informational and educational purposes only — not financial, investment, or tax advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why use an assumed rate instead of real history?
TrueMeasureKit runs entirely in your browser with no server calls, so this calculator can't fetch real historical CPI data the way a government inflation calculator can. Instead, it projects a constant rate you choose — useful for planning ("if inflation averages 3%, what will today's $1,000 need to become to keep pace in 10 years?") even though real inflation fluctuates year to year rather than compounding smoothly. A commonly used long-run planning assumption is 2–3.5% annually, but recent years have varied well outside that range.
Frequently asked questions
What inflation rate should I use?
US long-run average CPI inflation has historically been around 3% annually, though it varies significantly year to year. Try a range of rates (like 2%, 3%, and 5%) to see how sensitive your result is to the assumption.
What's the difference between nominal and real value?
Nominal value is the raw dollar figure. Real value is that figure adjusted for inflation — what it actually buys in today's purchasing power. This calculator shows both so you can see how much inflation erodes a fixed amount over time.