Calculating your future cost (same goods) is straightforward once you know the Inflation formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Inflation Calculator.
What is Inflation?
The Inflation calculation tells you your future cost (same goods) from a few simple inputs. The figure you are solving for here is the future cost (same goods), expressed in INR.
The Inflation formula
The core formula is:
Future cost (same goods) = Amount today × (1 + Inflation rate (p.a.) ÷ 100)^(Number of years)Here is what each input means:
- Amount today — a money amount. Example: ₹1,00,000.
- Inflation rate (p.a.) — a percentage, such as an annual rate. Example: 6%.
- Number of years — a value you set on the slider. Example: 10 years.
How to calculate it step by step
- Write down the amount today (for example, ₹1,00,000).
- Write down the inflation rate (p.a.) (for example, 6%).
- Note the number of years (for example, 10 years).
- Apply the formula above to get your future cost (same goods).
- Double-check the result with the Inflation Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Amount today | ₹1,00,000 |
| Inflation rate (p.a.) | 6% |
| Number of years | 10 years |
| Future cost (same goods) | ₹1,79,085 |
| Future value of today's money | ₹55,839 |
| Loss of purchasing power | ₹44,161 |
With amount today of ₹1,00,000, inflation rate (p.a.) of 6% and number of years of 10 years, the future cost (same goods) works out to ₹1,79,085.
Example 2
With amount today of ₹2,00,000, inflation rate (p.a.) of 6% and number of years of 10 years, the future cost (same goods) works out to ₹3,58,170.
| Result | Value |
|---|---|
| Future cost (same goods) | ₹3,58,170 |
| Future value of today's money | ₹1,11,679 |
| Loss of purchasing power | ₹88,321 |
Example 3
With amount today of ₹50,000, inflation rate (p.a.) of 6% and number of years of 10 years, the future cost (same goods) works out to ₹89,542.
| Result | Value |
|---|---|
| Future cost (same goods) | ₹89,542 |
| Future value of today's money | ₹27,920 |
| Loss of purchasing power | ₹22,080 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
- Annual rates must be converted to the period you are calculating for (for example, divide an annual rate by 12 for a monthly figure).
Prefer not to do the maths by hand? — the Inflation Calculator does it instantly, for free, with the formula and a worked example built in.
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