Free Cash Flow (FCF) Calculator

Cash left after reinvestment is the focus of the Free Cash Flow (FCF) Calculator. It measures one specific idea: operating cash flow minus capital expenditures. That makes it different from an earnings multiple, a dividend ratio, or a general cash budget. Operating cash flow starts with the cash produced by normal business activity; capital expenditures are cash spent on long-lived assets such as property, equipment, software infrastructure, or production capacity. The difference is free cash flow, a practical estimate of the cash left after the business has funded its asset base for the period.

This page is informational, not investment advice. FCF can support deeper research, but it does not by itself tell you whether a stock is cheap, safe, or appropriate for your portfolio.

How to use this calculator

Enter operating cash flow from the cash flow statement. Enter capital expenditures as a positive number, even though many statements show purchases of property and equipment as an investing cash outflow. The calculator subtracts that capex amount automatically. If you also enter shares outstanding and stock price, it estimates market capitalization, FCF per share, and FCF yield. If you enter revenue, it estimates FCF margin.

Use the same period for operating cash flow, capital expenditures, and revenue. Annual operating cash flow should be paired with annual capex and annual revenue. A trailing-twelve-month figure can work if every input covers the same twelve months. For cash from operations before capex, use the operating cash flow calculator. To compare FCF with a project valuation, see the net present value calculator. For a personal cash planning view rather than a company metric, use the budget calculator.

Formula

The calculator’s primary result is:

$\text{free cash flow} = \text{operating cash flow} - \text{capital expenditures}$

It then computes:

$\text{FCF per share} = \frac{\text{free cash flow}}{\text{shares outstanding}}$

$\text{market capitalization} = \text{shares outstanding} \times \text{stock price}$

$\text{FCF yield} = \frac{\text{free cash flow}}{\text{market capitalization}} \times 100\%$

$\text{FCF margin} = \frac{\text{free cash flow}}{\text{revenue}} \times 100\%$

Capex intensity is also shown when operating cash flow is not zero:

$\text{capex share of OCF} = \frac{\text{capital expenditures}}{\text{operating cash flow}} \times 100\%$

This calculator-defined scenario is not a rule, standard, legal conclusion, forecast, or universal convention.

Example: calculating free cash flow

Suppose a company reports $1,250,000 of operating cash flow and spends $350,000 on capital expenditures. It has 100,000 shares outstanding, trades at $35 per share, and reports $2,500,000 of revenue. The calculator subtracts capex from operating cash flow:

$\text{free cash flow} = 1{,}250{,}000 - 350{,}000 = 900{,}000$

FCF per share is $900,000 divided by 100,000 shares, or $9.00. Market capitalization is 100,000 shares times $35, or $3,500,000. FCF yield is $900,000 divided by $3,500,000, or 25.71 percent. FCF margin is $900,000 divided by $2,500,000, or 36.00 percent. Capex equals 28.00 percent of operating cash flow because $350,000 divided by $1,250,000 equals 0.28.

Those numbers match the result card: FCF is positive, per-share FCF is positive, yield and margin are positive, and the note explains that operating cash flow minus capital expenditures leaves $900,000 of free cash flow.

How to interpret free cash flow

Positive FCF usually means the business generated more operating cash than it spent on long-lived assets during the period. That cash could strengthen the balance sheet, repay debt, fund acquisitions, support dividends, repurchase shares, or stay in reserves. Negative FCF means capital expenditures exceeded operating cash flow. That is not automatically bad. A growing manufacturer may build a new facility, a utility may invest in infrastructure, or a software company may capitalize platform costs. The question is whether the spending is temporary, productive, and financed responsibly.

FCF yield puts the dollar amount beside the equity value investors assign to the company. A higher yield can look attractive because more cash flow is available for each dollar of market capitalization, but it may also reflect skepticism about future results. A low or negative yield may be acceptable for a company investing heavily at high returns, but it leaves less room for mistakes. FCF margin asks how much of each sales dollar turns into free cash flow, which makes it useful for comparing business models within the same industry.

Limitations and tips

Free cash flow is sensitive to timing. A temporary inventory build, late customer collection, delayed supplier payment, or one-time asset purchase can move a single year sharply. Review several periods rather than relying on one snapshot. Check whether capex is maintenance spending, growth spending, or a mixture. Maintenance capex supports the existing business; growth capex may create future revenue but can depress current FCF.

Do not replace capex with depreciation. Depreciation is an accounting expense; capital expenditures are current cash outflows. Also avoid comparing FCF yield across companies with very different debt levels without considering enterprise value, interest expense, and refinancing risk. If dividends are your focus, pair FCF with the dividend payout ratio calculator. If asset value matters more, compare this cash view with the price to book ratio calculator. FCF is most useful when it is reconciled with strategy, industry economics, and the notes to the financial statements.

Sources

• Corporate Finance Institute, Free Cash Flow — overview of FCF formulas and uses.
• Corporate Finance Institute, Operating Cash Flow — context for the cash-from-operations input.
• Fidelity, Analyzing financial statements — investor education on reading financial statements.