Inflation Calculator — What Is Your Money Really Worth?
Calculate how inflation erodes purchasing power over time — and what you need to earn to stay ahead.
Quick answer: Inflation reduces purchasing power, so the same dollars buy less over time. Compare inflation rate, time horizon, and savings yield to estimate the real value of cash.
After 10 years of 3.00% inflation, $10,000 today will have the purchasing power of $7,441.
The signed real savings result compares the entered APY with the entered inflation assumption; neither rate is guaranteed.
Plan this in Money MapCompare high-yield savings rates
- 1
Compare the leading option against your current setup
Compare constant inflation and effective-APY assumptions using nominal and real purchasing-power outputs.
- 2
Compare the result against current market-rate options
Assumptions change the answer, especially when rates, taxes, or timing matter.
- 3
Save the result to Money Map or use the linked next action
Turn the result into a prioritized action instead of treating it as a one-off number.
This is an educational estimate, not tax, legal, investment, or lending advice. Confirm with a qualified professional or the provider before acting.
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Reviewed Aug 24, 2026 · Methodology
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Everything you need to know.
What is the historical average inflation rate?
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Why This Matters
At 3% inflation, $100,000 today is worth $74,000 in 10 years and $55,000 in 20 years. Money sitting in a savings account at 0.5% while inflation runs at 3% is losing purchasing power every year. Seeing the real number creates urgency.
How to Use It
- 1Enter the amount and your current interest rate
- 2Set the expected inflation rate (long-term average: 3%)
- 3Set the time horizon
- 4See real vs nominal value and whether you are beating inflation
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