B&G Foods (NYSE: BGS) may be cheaper than you think.

In the daily noise machine of CNBC, analyst estimates, and quarterly announcements, investors are inundated with talking heads obsessing over earnings-per-share figures.

Earnings, or net income, is an accounting construction that is the basis for the price-to-earnings ratio, the most popular way of measuring how cheap or expensive a stock is.

But free cash flow -- the amount of cash a company earns on its operations minus what it spends on them -- is another, oftentimes more accurate measure of earnings that can give you an advantage.

How B&G stacks up                                          
If B&G tends to generate more free cash flow than net income, there's a good chance earnings-per-share figures understate its profitability and overstate its price tag. Conversely, if B&G consistently generates less free cash flow than net income, it may be less profitable and more expensive than it appears.

This graph compares B&G's historical net income to free cash flow. (I omitted various gains and charges such as tax deferrals, restructurings, and benefits related to stock options.)

Source: Capital IQ, a division of Standard & Poor's, and author's calculations.

As you can see, B&G has a tendency to produce more free cash flow than net income. This means that the standard price-to-earnings multiple investors use to judge companies may overstate its price tag.

There can be a variety of reasons to disregard such a discrepancy; for example, free cash flow can overstate earnings in businesses with volatile working capital needs, or understate earnings in high-growth companies that are reinvesting capital in the business.

Alternatively, in cases where free cash flow more accurately measures earnings, such a discrepancy can indicate a company that is more -- or less -- expensive than investors realize.

Let's examine B&G alongside some of its peers for additional context:

Company

Price-to-Earnings Ratio

Adjusted Price-to-Free-Cash-Flow Ratio

B&G Foods 17.0 13.3
Kellogg (NYSE: K) 15.7 21.2
McCormick (NYSE: MKC) 16.0 19.7
Diamond Foods (Nasdaq: DMND) 32.7 N/A*

* Negative free cash flow.

On a net income basis, B&G Foods appears to be more expensive than many of its packaged-food peers. But B&G Foods tends to generate more free cash flow than net income, suggesting that B&G’s stock might be quite a bit cheaper than many investors realize.

If you’d like to stay up-to-speed on the top news and analysis on B&G or any other stock, simply click here to add it to your stock watchlist. If you don't have one yet, you can create a watchlist of your favorite stocks by clicking here.