Market Cap Calculator
Find a company's market capitalization.
Results update as you type.
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How it works
Market capitalization, usually shortened to market cap, is the total dollar value the stock market places on a company's equity, and this calculator finds it by multiplying the current share price by the number of shares outstanding. It is the single most common way to describe a company's size, and it drives how firms are grouped and how index funds weight their holdings. Investors sort companies into broad categories: large-cap firms, generally worth more than ten billion dollars, tend to be established and relatively stable; mid-cap companies occupy a middle ground of growth and risk; and small-cap firms, often below two billion dollars, can grow faster but carry more volatility. Market cap matters because it, not the share price alone, tells you what a company is actually worth in the market's eyes; a stock priced at five dollars can represent a far larger company than one priced at five hundred if it has vastly more shares. Note that market cap measures only the equity value; enterprise value adds debt and subtracts cash to capture the cost of acquiring the whole business. Enter the share price and shares outstanding to compute the figure.
market cap = share price × shares outstanding
Market capitalization is the total market value of a company's outstanding shares, found by multiplying the current share price by the number of shares in issue. It represents what the stock market collectively believes the company's equity is worth right now. Because both the price and the share count are readily available, market cap is the simplest and most widely used measure of a public company's size.
Source:Equity market valuation
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Worked example
How to use this calculator
- 1
Enter your values
Enter share price and shares outstanding.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Market capitalization updates instantly as you type — no button to press.
Frequently asked questions
What is market capitalization?
Market capitalization is the total market value of a company's outstanding shares, calculated by multiplying the current share price by the number of shares in issue. It reflects what investors collectively think the company's equity is worth at this moment. Market cap is the standard measure of company size and is used to build and weight most stock market indices.
How is market cap different from share price?
Share price alone tells you nothing about a company's size, because it depends on how many shares exist. A twenty-dollar stock can belong to a company worth far more than a two-hundred-dollar stock if it has many more shares outstanding. Market cap multiplies price by share count to give the true total value, which is what actually reflects a company's scale.
What are large-cap, mid-cap, and small-cap?
These labels group companies by market cap. Large-cap firms are commonly those worth more than about ten billion dollars, mid-caps roughly two to ten billion, and small-caps below two billion, with micro-caps smaller still. Large-caps tend to be stable and mature, while smaller companies often offer higher growth potential alongside greater volatility and risk.
How is market cap different from enterprise value?
Market cap measures only the value of a company's equity, whereas enterprise value adds net debt to give the total cost of acquiring the whole business. Enterprise value equals market cap plus total debt minus cash. For a company with significant borrowings, enterprise value can be much larger than market cap and is often the better measure for comparing takeover costs.
Should I use basic or diluted shares?
For a headline market cap, the basic shares outstanding are typically used. However, a fully diluted figure that includes shares from options, warrants, and convertible securities gives a more complete picture of potential ownership. The difference is usually small for large, stable companies but can be significant for firms that have issued many stock options or convertible instruments.