Market Cap Calculator
Compute a company's market capitalization from its share price and shares outstanding.
What this calculator does
The Market Cap Calculator estimates your result instantly from the values you enter, using standard investing & wealth formulas. Compute a company's market capitalization from its share price and shares outstanding. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.
Result
About Market Cap Calculator
The Market Cap Calculator works out a company's market capitalization — the total market value of its outstanding shares — by multiplying the current share price by the number of shares outstanding.
Market capitalization is the headline measure of a company's size, used to sort firms into large-, mid-, and small-cap groups and to compare one company against another regardless of share price. Because a high share price with few shares can be worth less than a low price with many shares, the product of the two is what matters. The calculator returns that product directly from the two figures you enter.
Enter the share price and the shares outstanding, press Calculate, and read the market capitalization.
Formula & Mathematical Calculation
Market Capitalization = Share Price × Shares Outstanding
Calculation Example
A company trading at $150 per share with 10,000,000 shares outstanding has a market capitalization of $150 × 10,000,000 = $1,500,000,000.
Key Benefits
- Computes market capitalization directly from share price and share count.
- Gives the standard measure of company size for peer comparison.
- Shows why share price alone does not indicate how large a company is.
- Uses only the two figures you enter, with nothing else assumed.
How to Use this Calculator
-
Enter the share price
Type the current price per share in the Share Price field, for example 150. -
Enter the shares outstanding
Type the total number of shares outstanding in the Shares Outstanding field, for example 10000000. -
Press Calculate
The tool multiplies the share price by the shares outstanding to return the market capitalization. -
Compare companies
Repeat for other companies to compare their sizes on the same market-value basis.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
- Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
- Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
- Amounts are unit-agnostic: results are returned in the same currency you enter.
What it does not cover
- Market Cap Calculator produces estimates for education and planning, not a quote, offer or professional advice.
- Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
- Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For decisions with lasting financial impact, confirm the numbers with a qualified professional.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.
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