Market Capitalization Calculator
Calculate a company's market capitalization and find its size classification with our free tool. Enter the share price and total shares outstanding to determine the total market value and whether it is a nano, micro, small, mid, large, or mega cap company.
Market capitalization (market cap) is the total market value of a company's outstanding shares. It is calculated by multiplying the current share price by the total number of shares outstanding. Market cap is the primary way investors categorize companies by size and is used as a basis for index construction, fund management, and investment strategy.
Companies are typically classified into size categories: Nano cap (under $50 million), Micro cap ($50M-$300M), Small cap ($300M-$2B), Mid cap ($2B-$10B), Large cap ($10B-$200B), and Mega cap (over $200B). As of 2024, mega cap companies like Apple, Microsoft, and Nvidia have market caps exceeding $2 trillion. Each size category has different risk-return characteristics.
Smaller companies (micro and small cap) tend to offer higher growth potential but with greater volatility and risk. Large and mega cap companies provide more stability and often pay dividends but may grow more slowly. Many investors diversify across market cap categories. Enterprise value (EV = Market Cap + Debt - Cash) is a related metric that provides a more complete picture of a company's total value, especially for acquisitions.