Free Cash Flow Calculator
Enter your operating cash flow and capital expenditures to get free cash flow (FCF) in seconds. Switch to the EBIT method for a more detailed build-up using earnings, depreciation, and working-capital changes. Optional investor metrics, FCF yield, FCF margin, and FCF per share, update as you type. A step-by-step panel shows every calculation so you can check the numbers.
Formula
Worked example
A company has OCF of $120,000 and CapEx of $30,000. FCF = $120,000 - $30,000 = $90,000. With $500,000 revenue, FCF Margin = 90,000 / 500,000 = 18%. With 10,000 shares at $45 each, Market Cap = $450,000, FCF Yield = 90,000 / 450,000 = 20%, and FCF per Share = $9.00.
What is Free Cash Flow?
Free cash flow (FCF) is the cash a business generates from its operations after spending what is needed to maintain and grow its asset base. It is the money truly available to the company and its investors, the cash that can be used to pay dividends, buy back shares, reduce debt, or fund acquisitions without borrowing. Unlike net income (which includes non-cash items such as depreciation and accrual-based revenues), FCF reflects actual dollars the business can move. That is why investors and analysts frequently use it as the foundation for valuation, particularly in discounted cash flow (DCF) models.
OCF method vs. EBIT method
The most common formula is the Operating Cash Flow method: FCF = OCF - CapEx. You take the total cash generated by day-to-day operations and subtract the cash spent on capital investments in property, plant, and equipment. This is the quickest route when you have access to a full cash-flow statement. The EBIT method (also called the NOPAT method) builds FCF from the income statement instead: FCF = EBIT x (1 - Tax Rate) + Depreciation and Amortization - Change in Net Working Capital - CapEx. Here EBIT x (1 - Tax Rate) is called NOPAT (Net Operating Profit After Tax). Depreciation and amortisation are added back because they reduce accounting income without consuming cash. An increase in net working capital is subtracted because it represents cash tied up in inventory or receivables. Capital expenditures are subtracted last. Both methods should produce the same FCF when applied to the same set of financials; the EBIT path is useful when only income-statement data is available or when you want to stress-test individual line items.
How to interpret FCF margin, yield, and per-share metrics
FCF margin (FCF / Revenue) shows how efficiently a company turns sales into real cash. Software companies typically sit above 20%, while capital-intensive manufacturers might struggle to reach 5%. FCF yield (FCF / Market Capitalisation) is the inverse of the price-to-FCF ratio and can be compared directly with bond yields or earnings yields. A yield above 8% has historically been considered attractive for value investors, though quality and growth prospects matter. FCF per share lets you compare cash generation on a per-unit basis with earnings per share (EPS), because a wide gap between EPS and FCF per share can signal aggressive accounting. Negative FCF is not automatically a red flag: rapidly expanding businesses often invest heavily in CapEx for several years before cash flows turn positive, a pattern visible in the early years of Amazon, Tesla, and many technology companies.
Where to find the inputs on financial statements
Operating cash flow appears on the cash-flow statement under "Net cash provided by operating activities." Capital expenditures appear under "investing activities," usually labelled "Purchases of property, plant and equipment" or "Purchases of PP&E." EBIT is on the income statement as "Operating income" or can be reconstructed as revenue minus cost of goods sold minus operating expenses. Depreciation and amortisation appear both as a line in the income statement and as an add-back in the operating section of the cash-flow statement. Change in net working capital is either stated directly in the operating section or must be derived by comparing balance-sheet current assets and liabilities across two periods.
FCF Margin benchmarks by sector
| Sector | Typical FCF Margin | Assessment |
|---|---|---|
| Software / SaaS | 20% or above | Strong |
| Pharmaceuticals | 15-25% | Strong |
| Consumer Staples | 8-15% | Moderate |
| Industrials / Manufacturing | 5-10% | Moderate |
| Retail | 2-6% | Thin |
| Capital-Intensive (utilities, mining) | -5% to 5% | Thin to negative |
| High-Growth / Start-ups | Often negative | Investment phase |
Typical free cash flow margin ranges by industry. Asset-light businesses generally achieve higher margins than capital-intensive ones.
Frequently asked questions
What is the difference between free cash flow and net income?
Net income is an accounting measure that includes non-cash items (depreciation, amortisation, stock-based compensation) and adjustments for the timing of revenue and expense recognition. Free cash flow strips those out and also deducts capital expenditures, leaving only the cash actually generated and available to investors. A company with high net income but weak FCF may be booking revenue before cash is collected or spending heavily on fixed assets.
Can free cash flow be negative and still be healthy?
Yes. High-growth companies often run negative FCF for years while investing aggressively in factories, data centres, or infrastructure. As long as the business can fund those investments through equity or debt at a reasonable cost, negative FCF can be a deliberate strategic choice rather than a sign of distress. The key question is whether each dollar of CapEx generates more than a dollar of future cash flow.
What is a good FCF margin?
There is no universal benchmark because FCF margins vary hugely by industry. Asset-light software businesses often reach 20-30%, consumer-staples companies typically land between 8-15%, and capital-intensive industries like utilities or mining may produce margins in the low single digits or even negative during expansion phases. Compare the ratio against sector peers and the company's own history rather than against an absolute target.
How is FCF yield used in stock analysis?
FCF yield is calculated as free cash flow divided by market capitalisation, expressed as a percentage. It is the cash-flow equivalent of the earnings yield (inverse of the P/E ratio). A higher FCF yield suggests the market is pricing the stock cheaply relative to the cash it generates. Some investors screen for stocks with an FCF yield above 5-8% as a simple value filter, though a high yield can also reflect justified concern about the sustainability of cash flows.
What is NOPAT and why is it used in the EBIT method?
NOPAT stands for Net Operating Profit After Tax. It is calculated as EBIT multiplied by (1 - Tax Rate), and it represents the operating profit the business would earn if it had no debt (i.e., no interest tax shield). Using NOPAT as the starting point in the EBIT method makes the FCF figure comparable across companies with different capital structures, which is useful in valuation and peer benchmarking.
Should CapEx be entered as a positive or negative number?
In this calculator, enter CapEx as a positive number. The calculator subtracts it from OCF (or NOPAT + D&A - NWC). On financial statements, CapEx often appears in parentheses or with a negative sign in the investing section of the cash-flow statement because it represents a cash outflow, so take the absolute value when entering it here.