Inflation calculator
Enter a dollar amount and two periods. The page restates the amount in the later period's dollars using CPI-U, the Consumer Price Index for All Urban Consumers, all items, U.S. city average, not seasonally adjusted.
- US CPI-U
- Free, no sign-up
Rules checked on 27 October 2026: U.S. Bureau of Labor Statistics, CPI-U all items, series CUUR0000SA0, not seasonally adjusted, 1982-84=100, through September 2026.
Runs in your browser. Nothing you type or open is uploaded. Free to use, no account. More money tools
How to use it
- Enter the dollar amount.
- Choose two months, or two annual averages.
- Read the equivalent amount, the change and the annualised change.
The index behind the result
The series is CUUR0000SA0 from the U.S. Bureau of Labor Statistics, base 1982-84=100. The equivalent amount is your dollars times the later index divided by the earlier index. One hundred dollars at the 2000 annual average (172.2) is $182.17 at the 2024 annual average (313.689), a change of 82.17% and 2.53% a year over those 24 years.
Monthly figures run from January 1913 through September 2026, when the index is 336.940. October 2025 has no figure: the Bureau marks it unavailable because of the 2025 lapse in appropriations. From September 2025 (324.800) to September 2026 (336.940) the index rises 3.74%. The Bureau's news release states that twelve-month change as 3.7%, which is this ratio rounded to one decimal. The 2026 annual average is published after the year closes.
Private by design
Privacy
Everything runs in this page and stays on your device.
This page also shows Google ads, which can use cookies. Privacy and cookies explains how.
Questions
Which index is this?
CPI-U, all items, U.S. city average, not seasonally adjusted, series CUUR0000SA0, 1982-84=100.
Why is October 2025 missing?
The Bureau of Labor Statistics marks October 2025 unavailable because of the 2025 lapse in appropriations. The 2025 annual average, 321.943, is still in the series.
What is the latest month?
September 2026, index 336.940. The page was checked on 27 October 2026.
How is the annualised change worked out?
It is the constant yearly rate that carries the earlier index to the later one. For two annual averages the gap is the difference in years. For two months it is the number of months between them.
Can I compare a month with an annual average?
Choose one kind of comparison at a time: two months, or two annual averages. The annual average is the Bureau's own yearly figure.