Finance
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Market Capitalization Calculator.
Calculate equity market capitalization from share price and shares outstanding.
Set your values
Results update as you type.
FAQs
How does the market capitalization calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Assess company size for investment decisions
Investors use market cap to categorize companies (large-cap, mid-cap, small-cap) and to compare relative sizes within an industry. This helps in building a diversified portfolio.
Example: Compare a $50 stock with 10 million shares (market cap $500M) to a $100 stock with 2 million shares (market cap $200M).
Track changes in company valuation over time
By recalculating market cap as share price and share count change, you can monitor how the market values a company. This is useful for financial analysis and reporting.
Example: If a company's share price rises from $20 to $25 with 1 million shares, market cap increases from $20M to $25M.
Frequently Asked Questions
- What is market capitalization?
- Market capitalization (market cap) is the total value of a company's outstanding shares. It's calculated by multiplying the current share price by the total number of shares outstanding. It's a quick way to gauge a company's size and is used to classify companies as small, mid, or large cap.
- How do I use this market cap calculator?
- Simply enter the current share price and the total number of shares outstanding. The calculator will multiply these two numbers to give you the market capitalization. Ensure you use consistent units (e.g., price in dollars, shares in millions) to get the correct result.
- What is the difference between market cap and enterprise value?
- Market cap only considers equity value (shares outstanding times price). Enterprise value (EV) adds debt and subtracts cash to reflect the total value of a company. This calculator focuses solely on market cap, which is a simpler measure of equity value.
Tips & Common Mistakes
Tips
- Ensure you use the latest share price and the most recent shares outstanding figure for accurate results.
- Shares outstanding can change due to stock splits, buybacks, or issuance of new shares. Update the input accordingly.
- For large companies, shares outstanding are often in billions; you can enter the number directly or use millions for readability, but be consistent.
- Market cap is a snapshot in time; it fluctuates with the stock price throughout the trading day.
Common Mistakes to Avoid
- Using the number of shares issued instead of shares outstanding. Shares outstanding exclude treasury shares.
- Mixing units, such as entering price in dollars and shares in millions without adjusting the result.
- Forgetting to update the share count after a stock split or buyback, leading to an outdated market cap.
Last updated: August 13, 2026