Market Capitalization Calculator
Enter the share price and total shares outstanding to compute a company's market cap; optionally enter your holdings to see their value.
Input Data
Results
At a glance:Market capitalization is the total market value of a company's equity: market cap = share price × shares outstanding. It is commonly used to rank companies by size into large-cap, mid-cap and small-cap tiers.
Formula
Market cap = share price × shares outstanding.
Holding value = share price × shares held.
How to Use
- Enter the share price and total shares outstanding.
- Optionally enter the shares you hold.
- Read the company market cap, size tier and your holding value.
FAQ
What is the difference between market cap, revenue and assets?
Market cap is the market's pricing of the company's future (share price × shares), and it moves with sentiment; revenue and assets are actual accounting figures. A high market cap does not mean high revenue — think of high-PE growth stocks where the price reflects expectations, not current sales.
Where do I find the shares outstanding?
From the company's annual report, the exchange website or a financial platform (e.g. HKEX's 'disclosure of interests'/stock facts), under 'number of shares in issue'. Use the issued shares, not the authorised shares.
Does the market cap change?
Every minute, with the share price. This tool is a static snapshot: enter the current price to get the current market cap. For backtesting, use historical prices.
Does my holding value include fees?
No. Holding value = market price × shares, which is the current market worth. Your actual cost and profit or loss need the buy cost and fees deducted separately.
Is a larger market cap always safer?
Not necessarily. Large-caps tend to have better liquidity and smaller swings, but they are still exposed to industry and macro risks. Market cap is only a size measure, not a safety guarantee.
How does this relate to the P/E ratio calculator?
Market cap ÷ net profit = P/E ratio. This tool gives the market cap; the P/E calculator links the market value to earnings to assess valuation.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.