Free inflation calculator for your website

Add DollarThen's inflation calculator to your site or blog for free. It runs entirely inside the frame using bundled BLS CPI-U data (updated monthly), makes no external requests, and has no tracking, cookies or ads.

Size:

Option 1: iframe

<iframe src="https://dollarthen.com/embed/calculator/" title="Inflation calculator by DollarThen" width="480" height="190" style="border:0;max-width:100%" loading="lazy"></iframe>

Option 2: script tag

Inserts the same iframe. Optional data-amount, data-from, data-to attributes set defaults (e.g. data-from="1980").

<script src="https://dollarthen.com/embed/widget.js" data-width="480" data-height="190" async></script>

Live preview

Please keep the "Powered by DollarThen" link and BLS citation visible.

Source: U.S. Bureau of Labor Statistics, Consumer Price Index (series CUUR0000SA0), via the BLS Public Data API. Data retrieved 2026-10-21. BLS.gov cannot vouch for the data or analyses derived from these data after the data have been retrieved from BLS.gov.