Inflation Calculator
Calculate how inflation affects your purchasing power over time. Determine the future value of your money and plan your investments to stay ahead of rising costs.
Inflation Calculator
Project future value & purchasing power
📈 Inflation Guide
Historical Avg: ~3% per year
High Inflation: >5% per year
Target: 2% (Central Banks)
Rule of 72: Divide 72 by the inflation rate to see how many years until your
money's value is halved.
Frequently Asked Questions
Use FV = PV × (1 + i)^n, where i is the inflation rate and n is years. Example: ₹1 lakh today at 6% inflation, 10 years from now, will be worth ₹1.79 lakh — meaning what costs ₹1 lakh today will cost ₹1.79 lakh then. To go the other way (today's purchasing power of future money), divide instead: ₹1 lakh in 10 years has today's value of ₹1,00,000 / (1.06)^10 = ₹55,839. Inflation calculations are simple but powerful — they reveal how saving stagnant money quietly destroys wealth. The calculator handles both directions.
Subtract real return from nominal return. If your savings earn 7% but inflation is 6%, your real return is roughly 1%. ₹1 lakh today, in a 7% account for 10 years, grows to ₹1.97 lakh nominally. But ₹1.97 lakh in 10 years has today's purchasing power of about ₹1.10 lakh — so your real wealth gain is only ₹10,000. This is why parking long-term money in pure savings or low-yield FDs is a slow loss. To genuinely grow wealth, you need investments that beat inflation by a real margin. The calculator shows both nominal and real values.
₹1,000 today, at 6% inflation for 10 years, will be worth approximately ₹1,791 in nominal terms — meaning you'll need ₹1,791 in 2036 to buy what ₹1,000 buys today. Looked at the other way: ₹1,000 in your savings 10 years from now has today's purchasing power of about ₹558. India's long-term inflation has averaged 5-7%, so 6% is a reasonable planning rate. Higher-inflation periods (food, healthcare) erode value faster. The calculator computes both directions instantly. Use it for goals like education, weddings, or any large future expense planning.
Purchasing power loss = 1 − (1 / (1+i)^n). Example: 6% inflation over 15 years means purchasing power = 1 / (1.06)^15 = 0.4173. Loss = 1 − 0.4173 = 0.5827, or about 58%. So ₹100 today buys what only ₹42 buys in 15 years (in today's terms). If you parked ₹50 lakh in a savings account at 4% for 15 years, you'd grow it to ₹90 lakh nominally. But in today's purchasing power, that's worth only about ₹37.5 lakh — a real loss. The calculator quantifies this loss for any timeframe and inflation rate.
Inflation increases the future cost of your goal, so you need a bigger corpus than today's price. Daughter's wedding planned for 20 years from now, currently costing ₹15 lakh? At 6% inflation, the future cost is ₹48.1 lakh. Plan for ₹48 lakh, not ₹15 lakh. Always inflate the target before working backwards to the SIP or lump sum needed. Education inflation in India runs 8-10% (faster than general inflation), so use the relevant category-specific rate. Healthcare inflation is similar. The calculator includes a category-specific mode for goal planning.
For India, use 6% as a default long-term inflation rate — that aligns with RBI's target band and historical CPI averages. For specific categories: education 8-10%, healthcare 8-12%, lifestyle items 5-7%. For the US and developed economies, 2-3% is the standard assumption. Don't plan with 4%; you'll undershoot. Use the rate appropriate to the goal: a child's education at 9%, retirement living costs at 6%. Higher-inflation assumptions force conservative planning, which is safer. The calculator allows category-wise inflation inputs for accurate goal-based projections.
Simple comparison: real raise = nominal raise − inflation rate. If you got an 8% raise and inflation is 6%, your real raise is roughly 2%. More precisely, real raise = (1 + nominal) / (1 + inflation) − 1. For 8% nominal and 6% inflation: (1.08/1.06) − 1 = 1.89%. Track this every year. If your raises consistently lag inflation, your real wages are falling — even though your salary keeps growing on paper. Negotiate accordingly. The calculator runs the comparison for any year and shows the cumulative real-wage trend over multiple years.
Understanding the Inflation Calculator
Worked Example
Pete has $50,000 today. He wonders what equivalent purchasing power he'd need in 20 years if inflation averages 3%.
- FV = $50,000 × (1.03)^20
- (1.03)^20 = 1.806
- FV = $90,306 needed in 20 years to buy what $50,000 buys today
- Reverse: $50,000 in 2046 will only buy what $27,684 buys today.
- If he invests the $50,000 at 7% nominal (4% real), it grows to $193,484 nominal but only $107,142 in today's dollars.
Comparison Table
| Period | Inflation 2% | Inflation 3% | Inflation 5% | Inflation 8% |
|---|---|---|---|---|
| 5 years | $110 | $116 | $128 | $147 |
| 10 years | $122 | $134 | $163 | $216 |
| 20 years | $149 | $181 | $265 | $466 |
| 30 years | $181 | $243 | $432 | $1,006 |
What $100 today must grow to in order to maintain purchasing power.
Use Cases
- Retirement planning: nominal vs real targets.
- Salary negotiation: 3% raise barely keeps up with inflation.
- Historical comparison: 'what was my parents' $30k salary in today's dollars?'
- Cost-of-college projection: tuition has risen 5–6% annually for decades.
Glossary
- Inflation
- Rate of increase in the general price level over time.
- CPI
- Consumer Price Index — official US measure of inflation, published monthly by BLS.
- Core Inflation
- CPI excluding food and energy; smoother trend used by central banks.
- Real vs Nominal
- Real adjusts for inflation; nominal does not. Real shows actual purchasing power.
- Deflation
- Negative inflation — prices falling. Generally considered worse than mild inflation.
Sources & References
- BLS Consumer Price Index — Official US inflation data, updated monthly.
- Federal Reserve — Sets US monetary policy targeting 2% PCE inflation.
- IMF Data Mapper — Cross-country inflation data.
Last reviewed: May 2026