# Market Capitalization Calculator

Calculate market capitalization from share price and shares outstanding. Classify companies as nano, micro, small, mid, large, or mega cap. Free tool.

## What this calculates

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.

## Inputs

- **Share Price** ($) — min 0.01 — The current market price per share.
- **Shares Outstanding** — min 1 — The total number of shares outstanding.

## Outputs

- **Market Capitalization** — formatted as currency — The total market value of the company's outstanding shares.
- **Size Classification** — formatted as text — The market cap category (nano, micro, small, mid, large, or mega).
- **Market Cap (in Billions)** — formatted as currency — Market cap expressed in billions for readability.

## Details

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.

## Frequently Asked Questions

**Q: What is market capitalization?**

A: Market capitalization is the total market value of a company's outstanding shares of stock. It is calculated by multiplying the current stock price by the total number of shares outstanding. It represents what the market collectively believes the company is worth and is the primary measure of company size in public markets.

**Q: What are the market cap classifications?**

A: Nano cap: under $50 million. Micro cap: $50M-$300M. Small cap: $300M-$2B. Mid cap: $2B-$10B. Large cap: $10B-$200B. Mega cap: over $200B. These categories help investors understand the risk-return profile, with smaller caps offering higher potential returns but greater risk, and larger caps offering more stability.

**Q: Is market cap the same as a company's value?**

A: Not exactly. Market cap reflects the equity value based on stock price, but it does not account for debt or cash holdings. Enterprise value (EV) provides a more complete picture: EV = Market Cap + Total Debt - Cash. A company with a $10B market cap but $5B in debt is worth $15B to an acquirer, while one with $3B in cash has an enterprise value of $7B.

---

Source: https://vastcalc.com/calculators/finance/market-cap
Category: Finance
Last updated: 2026-04-21