Inflation Calculator
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What Your Result Means
- Future Cost: What the same basket of goods that costs your entered amount today would cost after the specified years at the given inflation rate. If something costs $100 now and inflation runs 3% for 10 years, it will cost about $134.
- Purchasing Power: How much today's dollars will be worth in the future in terms of real buying power. At 3% inflation over 10 years, $100 today buys only about $74 worth of goods in future terms.
- Cumulative Inflation: The total percentage increase in prices over the entire period. This is not the annual rate — it compounds, so 3% per year over 10 years produces about 34% total inflation, not 30%.
How This Calculator Works
You enter a dollar amount, an annual inflation rate, and a number of years. The tool applies compound growth — multiplying the amount by (1 + rate) raised to the power of years — to project the future nominal cost. It divides the same amount by that growth factor to show reduced purchasing power. Cumulative inflation is the growth factor minus one, expressed as a percentage. The calculation assumes a steady annual rate; real inflation fluctuates year to year.
Quick Questions
What inflation rate should I use?
The long-run U.S. average (CPI-U) has been roughly 3.0–3.5% per year since 1913. For conservative planning, 3% is a common default. For recent trends, check the BLS CPI data — annual inflation has ranged from about 1.2% to 9.1% in the 2020s alone.
Does inflation affect everyone equally?
No. The CPI measures an average basket of goods, but your personal inflation rate depends on what you spend on. Housing, healthcare, and education have historically inflated faster than electronics or clothing. Your effective rate may be higher or lower than the headline number.
How does inflation affect savings and investments?
If your savings earn less than the inflation rate, your money loses purchasing power over time. A savings account at 1% with 3% inflation means you lose about 2% of real value each year. This is why financial planners recommend growth investments that outpace inflation.
What is the difference between this and the U.S. Inflation calculator?
This calculator projects forward from any rate you choose. The U.S. Inflation calculator uses actual historical CPI data to show how prices changed between specific past years. Use this one for planning; use the U.S. version for historical lookups.
Sources
- Bureau of Labor Statistics — Consumer Price Index (official U.S. inflation data)
- Federal Reserve — 2% Inflation Target (Fed policy framework)
- Minneapolis Fed — Inflation Calculator (CPI-based historical calculator)
Method & review
Estimate only. Results reflect your inputs and standard formulas — they are not financial, tax, legal, health, or investment advice. Verify important decisions with a qualified professional.