Finance tools
Market cap calculator
Free stock market cap calculator and market capitalization calculator for public equities — apply Market Cap = Share Price × Shares Outstanding, solve missing value when you know cap and shares (no share price needed), see size tiers from nano to mega cap, and export CSV/PDF. Also works for crypto (price × circulating supply). No ticker lookup required.
What is market capitalization?
Market capitalization (market cap) is the total market value of a company’s outstanding equity shares at the current share price. It is one of the most common ways to describe how large a listed company is.
Investors use market cap to compare size, liquidity, and index membership (small cap vs large cap funds). It is not the same as enterprise value, which adds net debt to equity value.
This tool is a market capitalization calculator for stocks and other assets that trade with a price and a supply count — not a capitalization rate (cap rate) tool for rental NOI.
Calculate market cap
Share price × shares outstanding with live formula card.
Solve missing value
Enter any two of price, shares, or cap — solve the third.
Size tier badge
Nano, micro, small, mid, large, and mega cap classification.
CSV/PDF export
Download inputs and results for memos or models.
Related tools: intrinsic value calculator, WACC calculator, NPV calculator, present value calculator, ROI calculator, profit margin calculator. Not cap rate (real estate NOI ÷ value).
Market cap formula
Market capitalization formula
Market Cap = Share Price × Shares OutstandingShare price is the latest trading price per share. Shares outstanding counts all issued shares held by shareholders — use the figure from the company’s latest filing or data provider.
How to calculate market cap
Find share price and shares outstanding
Use the current share price and the number of outstanding shares from the balance sheet or market data.
Multiply price × shares
Market cap equals share price times shares outstanding — one multiplication.
Interpret the size tier
Compare the result to nano/micro/small/mid/large/mega bands to contextualize company size.
Worked example: $150 × 2 billion shares
Here is a textbook market capitalization example for a large listed company — the same numbers as the Mega cap ($300B) preset in the calculator.
| Input | Value |
|---|---|
| Share price | $150.00 |
| Shares outstanding | 2,000,000,000 |
| Market cap | $300,000,000,000 ($300B) |
| Size tier | Mega cap |
Market cap = $150 × 2,000,000,000 = $300 billion. A $150 share price alone does not tell you size — if the company had only 10 million shares, market cap would be $1.5 billion (small cap). Load the mega cap preset or enter your own price and share count for live results and export.
Market cap size tiers
Tier labels are industry shorthand — not part of the formula. Approximate US conventions:
| Tier | Typical market cap range |
|---|---|
| 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 |
What does market cap tell you?
Market cap is a quick equity value snapshot — what the market prices all outstanding shares at today. It is not a full business valuation (debt, cash, and control premiums sit outside the formula), but it answers practical questions investors ask every day.
Company size
Compare small cap vs mid cap vs large cap peers without being misled by share price alone.
Liquidity context
Larger caps usually trade in bigger volume — relevant for funds and position sizing.
Risk shorthand
Smaller caps often swing more on news; mega caps tend to be more stable — neither is automatically “better.”
Index & fund eligibility
Many ETFs and indices use market cap bands — crossing a tier can change passive demand.
Market cap changes daily with the share price (and when companies issue or repurchase shares). It does not equal net worth or enterprise value — pair it with EV analysis when debt matters.
Market cap vs enterprise value
Enterprise value (EV) prices the whole business: EV = Market Cap + Net Debt (debt minus cash). Two companies with the same market cap can have very different enterprise values if debt levels differ.
For weighted average cost of capital and DCF work, see our WACC calculator and intrinsic value calculator.
Market cap for private companies
Private companies do not have a live stock quote, so you cannot calculate market cap the same way as for NYSE or Nasdaq listings. Analysts instead estimate implied equity value from the last funding round (price per share × shares), comparable public multiples, or a full DCF.
This calculator is built for listed stocks and tokens with a known price. For private estimates, enter your assumed share price and share count manually, or use our intrinsic value calculator for DCF-style fair value work.
Stocks and crypto market cap
Google often mixes crypto market cap calculators with stock tools — the math is identical (price × supply), but the data sources differ.
For stocks, use share price and shares outstanding from filings. For crypto, use token price and circulating supply (not max supply unless you deliberately want fully diluted cap). This page is optimized for equities first; the same inputs work for tokens when you enter price and unit count manually.
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Frequently asked questions about this market cap calculator
How do you calculate market cap?
Multiply share price by shares outstanding: Market Cap = Price × Shares. Example: $150 × 2 billion shares = $300 billion market cap.
What is market cap?
Market cap is the total value of a company’s outstanding shares at the current market price — a standard measure of public company size.
What is the market capitalization formula?
Market capitalization = Share price × Shares outstanding. Rearrange to solve for price or shares when you know the other two values.
What are market cap tiers (small, mid, large, mega)?
Tiers group companies by size: nano (<$50M), micro ($50M–$300M), small ($300M–$2B), mid ($2B–$10B), large ($10B–$200B), mega (>$200B). Bands are approximate conventions used by index providers and analysts.
Is market cap the same as company value?
Not exactly. Market cap is equity value at the share price. Enterprise value includes debt and subtracts cash — the cost to own the whole business.
What is enterprise value vs market cap?
EV = Market Cap + Net Debt. Market cap ignores debt and cash; enterprise value reflects what it would cost to buy the operating business including those balance-sheet items.
Does a stock split change market cap?
No. A split multiplies shares and divides price by the same factor, so market cap is unchanged.
What is fully diluted market cap?
Fully diluted market cap uses all shares that could exist — including options and convertibles — times the share price. It is higher than basic market cap when dilutive securities are outstanding.
How do I find shares outstanding?
Check the company’s latest 10-K/10-Q, investor relations page, or market data terminal. Use shares outstanding for standard market cap; float or diluted counts for specialized comparisons.
Is a higher market cap better?
Larger cap often means more liquidity and stability, but not automatically better returns. Small caps can grow faster with more risk. Compare within your strategy and sector.
Can I use this for crypto market cap?
Yes. Use token price × circulating supply — the same multiplication. Enter circulating coins as shares outstanding.
What does market cap tell you?
Market cap shows total equity value at the current share price — a size and liquidity shorthand. It helps compare companies, screen index membership, and contextualize risk. It does not include debt, cash, or future earnings by itself.
What is a good market cap?
There is no universal “good” market cap. Large caps (e.g. $10B+) often trade with more liquidity; small caps can offer higher growth with more volatility. A $2 billion company is typically small cap — reasonable for growth strategies, not automatically “better” than a mega cap.
How do you calculate market cap without share price?
If you know market cap and shares outstanding, rearrange: Share price = Market cap ÷ Shares. Use Solve missing value mode in this calculator — enter cap and shares, leave price blank.
How do you calculate market cap for a private company?
Private firms lack a live quote. Common approaches: last round price × shares, comparable public multiples, or DCF. Enter assumed price and shares here for a quick implied equity value, or use our intrinsic value calculator for model-based fair value.
Why is market cap important?
It is the standard size metric for public companies — used in indices, funds, news, and peer comparisons. It updates with price daily and stays unchanged through stock splits, which makes it more reliable than share price alone.
Does market cap change daily?
Yes, whenever the share price moves or shares outstanding change (buybacks, new issuance). Splits do not change market cap because price and share count adjust inversely.
Is market cap the same as cap rate?
No. Market cap is stock share price × shares outstanding (equity size). Cap rate (capitalization rate) is NOI ÷ property value for real estate — a different formula and use case. Use our cap rate calculator for rental NOI yields.
What is the difference between market cap and stock price?
Stock price is one share’s price. Market cap is price × all shares — the measure of total equity size investors use for comparisons.