Inflation Calculator
See how inflation erodes your purchasing power over time
What Is an Inflation Calculator?
An inflation calculator helps you understand how rising prices erode the purchasing power of your money over time. Unlike CPI historical lookup tools, this calculator projects forward (or backward) using your chosen inflation rate — giving you a personalized view of what your money will be worth.
How Inflation Erodes Your Purchasing Power
At 3% annual inflation, $10,000 today will only buy $5,537 worth of goods in 20 years. That's a 45% loss in purchasing power — even though you still have $10,000 in your account. The numbers on your bank statement don't change, but what they can buy steadily shrinks.
The Rule of 72: How Fast Prices Double
Divide 72 by the inflation rate to estimate how many years prices will double. At 3% inflation, prices double in about 24 years. At 5%, they double in just 14 years. At 8%, about 9 years.
Does Your Savings Beat Inflation?
A high-yield savings account at 4.5% vs 3% inflation gives you a real return of about 1.46% per year — your money actually grows in purchasing power. But a basic checking account at 0.5% means you're losing 2.43% of real value every year. Enter your rates above to see the difference.
Forward vs Backward: Two Ways to Think About Inflation
Forward mode answers retirement and planning questions: 'What will my $500,000 be worth in 30 years?' Backward mode answers salary and historical questions: 'What is $50,000 from 2004 worth today?' Both perspectives help you make better financial decisions.
How Inflation Affects Your Retirement
Over a 30-year retirement, 3% inflation cuts your purchasing power by more than half. A $1,000,000 nest egg that feels abundant at 65 will only buy $412,000 worth of goods at 95. This is why retirement planning must account for inflation — use our Retirement Withdrawal Calculator to test how different withdrawal rates hold up against rising prices.
Inflation Around the World
Different countries experience vastly different inflation rates. Developed economies typically target 2% but often see 2–5%. Emerging markets can experience 5–15% or higher. This calculator supports multiple currencies and preset rates for major markets.
How to Protect Your Money from Inflation
Strategies include high-yield savings accounts, Treasury Inflation-Protected Securities (TIPS/I-Bonds), diversified stock portfolios (historically 7–10% returns), and real estate. The key is ensuring your total return exceeds inflation. Adjust the savings rate above to model different strategies.
Frequently Asked Questions
- What is inflation and how does it affect my money?
- Inflation is the rate at which prices rise, reducing what your money can buy. At 3% inflation, something costing $100 today will cost $103 next year. Over 24 years, your money's purchasing power is cut in half.
- How do I know if my savings beat inflation?
- Compare your savings interest rate to the inflation rate. Enter both rates into this calculator to see the verdict instantly. A 4.5% HYSA vs 3% inflation gives you +1.46% real return — your money is actually growing in value.
- What is the Rule of 72?
- Divide 72 by the inflation rate to estimate how many years prices will double. At 3% inflation: 72 ÷ 3 = 24 years. This means a $10 item today will cost $20 in about 24 years.
- Should I use historical inflation or a custom rate?
- This tool uses your specified rate for forward projection, not historical data. For long-term planning, 3% is a good estimate for developed economies. For short-term analysis, check your country's current inflation rate.
- How does inflation affect retirement planning?
- Over a 30-year retirement, 3% inflation cuts purchasing power by more than half. A $1,000,000 portfolio will only buy $412,000 worth of goods after 30 years. Use our Retirement Withdrawal Calculator for detailed retirement planning.
- How can I protect my savings from inflation?
- High-yield savings accounts (4-5% APY), Treasury Inflation-Protected Securities (TIPS and I-Bonds), diversified stock portfolios (historically 7-10% returns), and real estate are common inflation hedges. The key is ensuring your total return exceeds the inflation rate — use the savings rate input above to compare different strategies.