About this calculator

How-to: enter today's amount, the average annual inflation rate and years forward. Future purchasing power = Present ÷ (1 + i)^n. Required future amount to preserve today's spending power = Present × (1 + i)^n. US CPI has averaged ~3.1% since 1913; the eurozone target is 2%. High-inflation periods (1970s, 2022) exceeded 8–14%.

Frequently asked questions

How do I protect against inflation?

TIPS (US) or index-linked gilts (UK) pay a real yield adjusted to CPI. Equities and real estate historically outpace inflation over long horizons; cash loses purchasing power.

Is 3% a reasonable long-term assumption?

Yes for developed markets. US CPI has averaged 3.1% (1913–2024). Eurozone target 2%. Add a buffer for retirement planning — 3.5% is prudent.

What does the Inflation-Adjusted Purchasing Power Calculator do?

See what a sum of money today will be worth in future purchasing power — and how much you'd need in the future to buy the same basket today. How-to: enter today's amount, the average annual inflation rate and years forward. Future purchasing power = Present ÷ (1 + i)^n. Required future amount to preserve today's spending power = Present × (1 + i)^n. US CPI has averaged ~3.1% since 1913; the eurozone target is 2%. High-inflation periods (1970s, 2022) exceeded 8–14%.

Is the Inflation-Adjusted Purchasing Power Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Inflation-Adjusted Purchasing Power Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified finance professional before committing to a purchase or a job.

What inputs does the Inflation-Adjusted Purchasing Power Calculator need?

Enter values for: Amount today, Average inflation (%/yr), Years forward, Currency. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Inflation-Adjusted Purchasing Power Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.