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インフレ計算機

将来の商品コストとインフレによる購買力の低下を計算します。

はじめに

Inflation Calculator — Calculate the future cost of goods and eroded purchasing power due to inflation. Enter Present value, Inflation rate (%), Years to get an instant, accurate result.

計算式

Future cost = present value × (1 + inflation rate)ⁿ. Real purchasing power of that present amount in the future = present value ÷ (1 + inflation rate)ⁿ.

ステップごとの説明

  1. Enter the Present value.
  2. Enter the Inflation rate (%).
  3. Enter the Years.
  4. Click Calculate to see your result instantly.

実例

Example: With Present value = 10000, Inflation rate (%) = 3, Years = 10, the Inflation Calculator gives Future Cost: 13439.1638, Real Purchasing Power: 7440.9391.

よくある質問

What does "future cost" mean here?
What today's amount will cost in the future after inflation — i.e. how much more money you'd need to buy the same thing.
What does "real purchasing power" show?
How much today's fixed amount of money will actually be worth (in today's terms) after inflation erodes its value over time.
What inputs does the Inflation Calculator need?
You'll need to provide: Present value, Inflation rate (%), Years. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Inflation Calculator?
The Inflation Calculator applies the formula exactly as calculated — Future cost = present value × (1 + inflation rate)ⁿ. Real purchasing power of that present amount in the future = present value ÷ (1 + inflation rate)ⁿ. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Are these results guaranteed?
No. The Inflation Calculator gives an estimate based on the numbers you enter and standard financial formulas — actual rates, fees, taxes, and terms vary by lender, institution, and jurisdiction, and can change over time. This is not financial advice; consult a qualified financial professional for decisions specific to your situation.
Is the Inflation Calculator free to use?
Yes, the Inflation Calculator is completely free, requires no signup, and runs instantly in your browser.

インフレ計算機について

The Inflation Calculator uses a real, verifiable formula — Future cost = present value × (1 + inflation rate)ⁿ. Real purchasing power of that present amount in the future = present value ÷ (1 + inflation rate)ⁿ. — so results are accurate every time, not an approximation.