A 3% raise sounds like progress until you notice prices moved faster than that over the same period. The math behind an inflation calculator — converting an amount from one year into another year's dollars — works just as well on a salary as it does on an old price tag. Here's how to reframe it around pay, plus a couple of related tricks the underlying value-over-time formula supports that go beyond the usual "what's $100 worth now" question.
Turning a raise into a real, inflation-adjusted number
Quick answerTo check whether a raise kept pace with inflation, convert your old salary into today's dollars using the same value-over-time formula the calculator already uses — value = amount × (index_end ÷ index_start) — then compare that inflation-adjusted figure to your actual new salary. If the new number is higher than the adjusted figure, you gained real purchasing power; if it's lower, the raise didn't fully offset inflation.
The calculator's "value over time" mode is built to answer "what would this old dollar amount be worth today," using an old year, a comparison year, and an amount. A salary is just a dollar amount tied to a specific year, so the exact same three inputs work: enter your old salary as the amount, the year that salary started as the starting year, and the year your new salary took effect as the comparison year. The tool then shows you what that old salary is worth in the newer year's dollars — the number your raise would need to beat, just to keep your buying power flat.
Hypothetical example: say a salary of $60,000 started in one year, and by three years later cumulative inflation over that span happened to be about 9%, as an illustrative figure. Inflation-adjusted, that old $60,000 is worth roughly $65,400 in the later year's dollars. A raise to $63,000 would be a nominal 5% increase — but since it falls short of the $65,400 inflation-adjusted figure, it represents a real-terms pay cut of a few hundred dollars, even though the paycheck number went up.
This distinction between a nominal raise percentage and a real (inflation-adjusted) raise is exactly the nominal-vs-real concept behind the calculator, just applied to wages instead of a lump sum. It's a useful gut-check before treating any raise, offer, or "cost of living adjustment" as guaranteed progress.
Working backward: deflating today's dollars into an earlier year
Quick answerThe forward formula (multiply by index_end ÷ index_start) and the backward formula are mirror images of each other — to convert a recent amount into an earlier year's purchasing power, just swap which year's index goes on top: amount × (index of earlier year ÷ index of later year). Enter the later year as the starting year and the earlier year as the comparison year to get this deflated figure directly from the tool.
Most people reach for an inflation calculator to answer "what is old money worth now," but the reverse question comes up too: "if I'm comparing a modern number to something from an old contract, budget, or negotiation, what would today's figure have looked like back then?" That's the same ratio, just flipped. Because the underlying calculation only depends on which two CPI-U index values you divide, there's no separate formula to learn — only which year you treat as the reference point.
⚠ Worth noting: a dedicated backward-projection input — where you'd type in a recent amount and a custom assumed rate to deflate it into an earlier year, mirroring the tool's existing forward future-value mode — isn't a separate feature in the calculator today. You can get the same result now by entering your two actual years in the standard value-over-time mode with the more recent year first; a purpose-built backward mode using a custom rate (rather than actual historical CPI-U data) is a reasonable addition for a future update.
Saving and revisiting a salary comparison
Once you've run a comparison — old salary, old year, new year — the calculator's Share button and Copy link option both let you generate a link that reproduces that exact calculation, which is handy for revisiting a raise comparison later, sending it to a partner for a household budget conversation, or dropping it into notes ahead of a performance review. The PDF/Print option turns the current result into a printable page if you want a static copy instead of a link.
None of this requires an account or storage of your numbers anywhere outside the link itself — the calculation happens in your browser, and the link simply encodes the inputs you already typed in.
What's on the roadmap for salary-style comparisons
A few ideas that would make this kind of wage-vs-inflation check more direct, none of which are built into the tool yet: a dedicated "Salary / Wage" mode that relabels the existing inputs around pay and automatically surfaces the "did your raise beat inflation" comparison instead of requiring you to do that final subtraction yourself; and a PNG export of the trend chart (via the browser's canvas export capability) sitting alongside the existing Share, Copy link, and Print buttons, so a visual of the inflation trend over your raise period could be dropped straight into a document or email. Until then, the value-over-time mode covers the underlying math — it just takes relabeling "amount" as "salary" in your head to use it that way.
Frequently asked questions
How do I tell if my raise kept up with inflation?
Compare your raise percentage to the cumulative inflation rate over the same period, using the CPI-U index for the year your old salary started and the year your new salary took effect. If your raise percentage is smaller than the cumulative inflation percentage over that span, your real (inflation-adjusted) pay went down even though the nominal number on your paycheck went up. For example, a hypothetical 3% raise during a period when cumulative inflation over the same stretch ran 5% represents a real pay cut of roughly 2 percentage points, as an illustrative estimate.
What does "real wage growth" mean?
Real wage growth is the change in your pay after removing the effect of inflation, so it reflects actual purchasing power rather than the face value of the paycheck. It's calculated by converting your old salary into today's dollars using the CPI-U ratio between the two years, then comparing that inflation-adjusted figure to your new salary. If your new salary is higher than the inflation-adjusted old one, you gained real purchasing power; if it's lower, you lost some even with a nominal raise.
Can I convert a recent amount back into an earlier year's dollars?
Yes — the same value-over-time formula works in both directions. To go backward, put the more recent year in as the starting year and the earlier year as the comparison year (or simply swap which CPI-U index goes in the numerator and denominator): amount × (index of earlier year ÷ index of later year). This deflates a current amount into an earlier year's purchasing power, which is the mirror image of the usual forward calculation.
Is there a way to see my raise trend on a chart?
The calculator's built-in trend chart currently plots the CPI-U index or the equivalent dollar value across your selected date range, which is the same data you'd use as the inflation benchmark for a salary comparison — you'd track your own salary figures separately and compare them against that trend line. A dedicated salary/wage mode that plots your pay directly against the CPI-U line, along with a one-click PNG export of that chart, is a natural direction for this tool but is not built yet.
Does a cost-of-living raise guarantee I don't lose purchasing power?
Only if the raise percentage matches or exceeds the cumulative inflation rate over the exact period it's meant to cover, measured with the same CPI-U index used elsewhere in your comparison. A raise labeled as a "cost of living adjustment" can still lag actual inflation if it's based on a different index, an outdated forecast, or a rate set before the year's real inflation figures were known — it's worth checking the actual cumulative CPI-U change for your specific dates rather than assuming the label is precise.