Market Cap Calculator

Market cap equals the current share price multiplied by total outstanding shares. Shares Outstanding is labelled Cr (crore). A value below 1 lakh (1,00,000) is read as crore of shares and a larger value as an individual share count, so 2 and 2,00,00,000 give the same answer for a company with 2 crore shares. A blank or zero price or share count is replaced by a default. P/S Ratio, Implied P/E and EV/Sales (Est) show Enter revenue or Enter net profit, because the form has no revenue or profit field. The category, eligibility and liquidity cards use fixed size bands this form cannot verify.

The market-cap formula

Investor.gov defines market capitalisation as current public-market price per share multiplied by total outstanding shares. Use a price and share count that refer to the same company and compatible dates.

The result is equity market value. It does not establish a company’s accounting net worth, annual revenue, net profit or a fair purchase price for the entire business. A low share price also does not by itself mean a small company: the share count matters.

There are only two visible inputs here: Current Stock Price in rupees, and Shares Outstanding with a Cr suffix (values under 1 lakh are read as crore of shares). The form does not ask for revenue, earnings, cash, debt or publicly tradable share percentage. It has no company-search control or financial-statement lookup.

Crore shares versus an individual share count

One crore equals 1,00,00,000. Multiplying a rupee share price by a share count already expressed in crore gives market cap in rupee crore. Multiplying by an individual share count gives market cap in rupees, which must then be converted to crore.

The formula reads a Shares Outstanding value below 1 lakh as crore of shares and a larger value as an individual share count. The Market Cap (₹ Cr) card rounds to a whole crore, so a very small company can show 0 there. Read the Market Cap (₹) card too.

The following example shows both the intended unit convention and the actual behaviour. It does not validate the tool’s other cards. For the broader definition, see the free-float, category and enterprise-value sections further down this page.

Large cap, mid cap and small cap in India

In India the words large cap, mid cap and small cap have an official meaning for mutual funds. They are based on rank, not on a fixed rupee amount. SEBI's circular on categorisation and rationalisation of mutual fund schemes (6 October 2017) ranks listed companies by full market capitalisation. The first 100 companies are large caps, the 101st to 250th are mid caps, and the 251st onwards are small caps. AMFI, the mutual fund association, publishes the ranked list every six months, working with SEBI and the exchanges. The search results used for this page were secondary reports of the circular, so open the AMFI list for the current ranking.

Because the ranking moves, a company worth ₹400 crore is not "small cap" or "mid cap" on its own. It depends on where it ranks among all listed companies on the day. The Category card in the calculator uses fixed internal bands, so use the AMFI list for the real answer.

Full market cap vs free-float market cap

Full market cap uses every share the company has issued. Free-float market cap counts only the shares that the public can actually trade, so shares held by promoters and other locked-in holders are left out. Most major index providers weight their companies by free-float market cap, because those are the shares that investors can really buy. See free float for more.

Take the made-up company from the worked example: price ₹200 and 2 crore shares, so the full market cap is ₹400 crore. Suppose promoters hold 60% of the shares. Then the free-float share is 100% − 60% = 40%, and the free-float market cap is ₹400 crore × 40 ÷ 100 = ₹160 crore. Two companies with the same full market cap can have very different free-float market caps, and so very different weights in an index.

The calculator above only has a price and a share count, so it can only show full market cap. To get free float, take the public shareholding percentage from the company's filing and multiply.

Compare two companies' market caps

Market cap lets you compare size, not price. A share priced at ₹50 can belong to a bigger company than a share priced at ₹200. Here is a made-up comparison, with share counts in crore.

Company B has the lower share price but the larger market cap, by ₹100 crore. If you use this calculator for such a comparison, remember how the tool reads units: a Shares Outstanding value under 1 lakh is treated as crore of shares, so enter 2 and 10 (or 2,00,00,000 and 10,00,00,000). Read the Market Cap (₹) card as well as the crore card for small companies.

Market cap vs enterprise value

Market cap values only the shares. Enterprise value also adds debt and subtracts cash, because someone buying the whole business takes on both. A company with a ₹400 crore market cap, ₹100 crore of debt and ₹30 crore of cash has an enterprise value of 400 + 100 − 30 = ₹470 crore. These figures are made up. For the full method use the enterprise value calculator.

Finding shares outstanding in exchange filings

The share count must come from a reliable, dated source. Listed companies file a shareholding pattern with the stock exchanges each quarter, and it shows the total number of shares and who holds them. The company's annual report and its exchange announcements also state the share capital.

• Open the company's page on the NSE or BSE website and find the shareholding pattern.
• Take the total number of shares, not the number traded that day.
• Note the date of the filing and check later for any bonus issue, split or buyback.
• Match the date of the share price to the date of the share count where you can.

Crypto market cap

For a crypto token the same idea is used: price multiplied by circulating supply, meaning the coins currently available. Two issues make it less reliable. Different sites count supply differently, and a token with a thin market can show a large "market cap" that nobody could actually sell into. If you compare tokens, write down the source, the supply definition, the currency and the date. The stock-specific cards in this calculator do not apply to crypto.

Market cap vs share price

Share price alone tells you almost nothing about size or value. A low price can be a very large company with a huge number of shares, and a high price can be a small one. Market cap puts price and share count together, and that is why it is the standard measure of company size. It still does not say whether the shares are cheap or expensive. For that you need earnings, sales and debt, which this form does not take.

Worked example: the unit mismatch changes the answer

Made-up company: Current Stock Price ₹200 and total outstanding shares 2 crore, equivalent to 2,00,00,000 individual shares. The correct equity market value is ₹4,00,00,00,000, or ₹400 crore.

Entering the individual share count reproduces the market-cap multiplication only. It does not make the other cards researched company information. Keep your share-count source and units beside the result when comparing it with an exchange or company disclosure.

Why the extra cards are not company research

• P/S Ratio: price-to-sales needs actual revenue. The form has no revenue field, so the card shows Enter revenue.
• Implied P/E: price-to-earnings needs actual profit or earnings per share. This form has no earnings input, so the card shows Enter net profit.
• EV/Sales (Est): enterprise value concerns equity value and financing adjustments. The card labelled EV/Sales (Est) is wired to an estimated earnings-based figure, despite its sales label, and shows Enter net profit because the form has no profit field.
• Category: assigned from fixed rupee-value bands. It does not check the company’s rank in the current official classification.
• Index Eligibility and F&O Eligibility: threshold-based wording, without verifying listing or eligibility criteria for a named security.
• Liquidity: inferred from the size category, without observing volume, order-book depth or spread.

Those outputs should not decide whether a stock qualifies for an index or derivatives trading. The form does not even identify the company whose eligibility it purports to describe. Check the exchange’s current security list separately.

For the Indian mutual-fund classification context, Samco’s published scheme disclosure describes full-market-cap ranks and use of the AMFI list. A fixed rupee band cannot establish that ranking. No current company category is verified by this calculator.

Market cap, free float and enterprise value

Total market cap uses total outstanding shares. Free-float analysis considers the portion available for public trading under the applicable methodology. A form without an actual float input cannot establish a company’s real free-float value.

Likewise, entering only price and shares supplies no actual cash or debt balance for enterprise-value adjustments. Do not infer a researched enterprise value from a figure that silently assumes those balances.

To analyse separate reported inputs, see the debt-to-equity calculator and P/E calculator, reading each tool’s limits. Borrowings, accounting equity and equity market value are different measures.

Check the observation date and share basis

Use the company’s reported outstanding share count rather than a count of shares traded during the day. Keep a dated quote alongside it. Check whether a later issue, repurchase or change in the share structure means the figure needs updating before comparison.

Do not mix a split-adjusted price with a share count from before the same adjustment. For a comparison between companies, use consistent currency, observation dates and share definitions. This form cannot perform currency conversion or resolve different classes of shares.

A blank or zero price or share count is replaced by a default price or share count. A result that remains after deleting a field is not confirmation that the company has zero market value. Use valid positive inputs and verify the raw multiplication.

Sources

• Investor.gov: price multiplied by outstanding shares, checked 16 October 2026.
• Samco scheme disclosure: rank-based stock categories and AMFI list use, checked 16 October 2026.