Is this based on official CPI data?

No. You choose the rate. Official consumer price indexes vary by country and basket of goods.

Can I calculate backward?

Yes. If the ending year is earlier than the starting year, the calculator shows the equivalent past value.

Finance

See how an amount’s purchasing power changes between two years at a chosen inflation rate.

Adjusted amount

$1,384.23

Share your result

Enter an amount, a starting year, an ending year, and an annual inflation rate. The same rate is applied for each year in the range.

Adjusted amount = original × (1 + rate)^years, where years = ending year − starting year.

$1,000 in 2015 at 3% annual inflation is worth about $1,384 in 2026 in nominal terms.

Percent of, change, and difference.

Exact age, totals, and next birthday.

Estimate investment growth over time.

Monthly payment and amortization summary.