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Market Cap Calculator 2025 - Stock Market Capitalization Calculator

Calculate market capitalization of any stock instantly with our advanced online calculator. Get real-time results for company valuation, market cap to revenue ratio, enterprise value calculations, large/mid/small cap classification, sector-wise comparison, and international currency conversion. Compare market cap vs book value with PDF download feature for investment analysis.

Enter current market price of one share
Total number of shares issued by company
For calculating Price to Sales ratio
For calculating Price to Book ratio
For calculating P/E ratio
Market Cap Classification
Large Cap
> ₹20,000 Cr
Mid Cap
₹5,000-20,000 Cr
Small Cap
< ₹5,000 Cr
Total Market Capitalization
₹0
Category: -
Valuation Metrics
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P/E Ratio
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P/B Ratio
-
P/S Ratio
-
MC/Rev
💰
Market Cap
₹0
📊
P/E Ratio
-
📈
Enterprise Value
₹0
💵
Per Share Value
₹100
Detailed Valuation Metrics
Metric Value Industry Avg Status
Market Capitalization
₹0
Category
-
Valuation Status
-
Market Rank
-
📐 Market Cap Calculation Formula
Market Capitalization = Current Share Price × Total Outstanding Shares

Example: If share price is ₹100 and total shares are 10 million, then Market Cap = ₹100 × 10,000,000 = ₹1,000,000,000 (₹1,000 Crore or ₹10 Billion)
📊 Market Cap Categories in India
Large Cap: Market cap > ₹20,000 Crore (Top 100 companies)
Mid Cap: Market cap ₹5,000 - ₹20,000 Crore (101-250 rank)
Small Cap: Market cap < ₹5,000 Crore (251+ rank)
Micro Cap: Market cap < ₹500 Crore
Nano Cap: Market cap < ₹100 Crore
Top Indian Companies by Market Cap (2025)
Company Market Cap Category Sector P/E Ratio
Reliance Industries ₹17,50,000 Cr Large Cap Oil & Gas 27.5
TCS ₹14,00,000 Cr Large Cap IT 32.1
HDFC Bank ₹12,50,000 Cr Large Cap Banking 19.8
Infosys ₹7,00,000 Cr Large Cap IT 28.4
ICICI Bank ₹6,80,000 Cr Large Cap Banking 18.2
* Data for illustration purposes. Check live market data for current values.

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Market Cap Calculator 2025 - Stock Market Capitalization Calculator

Published: Nov 8, 2025 — 11:10 PM IST

Market capitalization (market cap) is the total value of a company's outstanding shares, calculated by multiplying share price with total shares. Our advanced market cap calculator 2025 helps investors instantly calculate company valuation, classify stocks into large/mid/small cap categories, compare P/E and P/B ratios, and analyze enterprise value. Whether you're evaluating stock market capitalization for investment or comparing market cap vs revenue multiples, our calculator provides comprehensive analysis with PDF download feature for documentation.

Understanding market cap is crucial for portfolio diversification and risk assessment. Our market capitalization calculator with ratios shows real-time valuation metrics, sector-wise comparisons, and international currency conversion. With features like enterprise value calculator and market cap classification according to SEBI guidelines, investors can make informed decisions about stock selection and portfolio allocation.

Market Cap Calculator PDF Download - Complete Valuation Report

Our market cap calculator with PDF download feature enables investors to save detailed valuation reports instantly. The downloadable PDF includes complete market cap calculation, valuation ratios (P/E, P/B, P/S), enterprise value analysis, peer comparison metrics, and investment recommendations. This documentation is essential for investment analysis and decision-making, portfolio review meetings, financial reporting, and research documentation. Generate professional reports for different stocks to compare valuations effectively.

Market Capitalization Formula & Calculation

Understanding market cap calculation formula is fundamental for stock valuation:

Market Capitalization = Current Share Price × Total Outstanding Shares

Example: Share Price ₹500 × 2 Crore Shares = ₹1,000 Crore Market Cap
Enterprise Value = Market Cap + Debt - Cash

Market Cap Calculation Example:

Company: ABC Ltd
Share Price: ₹1,250
Total Shares: 10 Crore (100 million)
Market Cap = ₹1,250 × 10,00,00,000 = ₹12,500 Crore
Category: Mid Cap Stock

Market Cap Categories - Indian Stock Market Classification

SEBI's classification for market capitalization categories in India:

Category Market Cap Range Rank by Market Cap Risk Level Examples
Large Cap > ₹20,000 Crore Top 100 companies Low Reliance, TCS, HDFC Bank
Mid Cap ₹5,000 - ₹20,000 Cr 101-250 rank Moderate Voltas, Tata Power
Small Cap ₹500 - ₹5,000 Cr 251-500 rank High Welspun, Rain Industries
Micro Cap ₹100 - ₹500 Cr 501+ rank Very High Small listed companies
Nano Cap < ₹100 Cr Bottom tier Extreme Penny stocks

Important Valuation Ratios with Market Cap

Key metrics our market cap calculator with ratios computes:

1. Price to Earnings (P/E) Ratio:

  • Formula: Share Price ÷ Earnings per Share
  • Indicates if stock is overvalued or undervalued
  • Industry average comparison essential
  • Lower P/E may indicate value opportunity

2. Price to Book (P/B) Ratio:

  • Formula: Share Price ÷ Book Value per Share
  • Useful for asset-heavy companies
  • P/B < 1 may indicate undervaluation
  • Banking sector relies heavily on P/B

3. Market Cap to Revenue Ratio:

  • Formula: Market Cap ÷ Annual Revenue
  • Also called Price to Sales (P/S) ratio
  • Useful for loss-making companies
  • Tech companies often have high P/S

Free Float Market Cap vs Total Market Cap

Understanding the difference is crucial for index calculation:

Aspect Total Market Cap Free Float Market Cap
Definition All outstanding shares × Price Tradeable shares × Price
Includes All shares including locked-in Only publicly traded shares
Excludes None Promoter holding, locked shares
Used for Company valuation Index weightage calculation
Example ₹10,000 Crore ₹6,000 Crore (60% free float)

Market Cap Calculator for Different Sectors

Sector-wise market cap benchmarks in India:

Sector Large Cap Threshold Average P/E Top Company Market Cap
Banking ₹50,000 Cr+ 15-20 HDFC Bank ₹12,50,000 Cr
IT Services ₹40,000 Cr+ 25-30 TCS ₹14,00,000 Cr
Oil & Gas ₹60,000 Cr+ 10-15 Reliance ₹17,50,000 Cr
FMCG ₹30,000 Cr+ 35-45 HUL ₹6,50,000 Cr
Pharma ₹25,000 Cr+ 20-25 Sun Pharma ₹3,50,000 Cr

Global Market Cap Comparison

How Indian companies compare globally:

Company Country Market Cap (USD) Market Cap (INR) Global Rank
Apple USA $3 Trillion ₹250 Lakh Cr 1
Microsoft USA $2.8 Trillion ₹233 Lakh Cr 2
Saudi Aramco Saudi Arabia $2.1 Trillion ₹175 Lakh Cr 3
Reliance India $210 Billion ₹17.5 Lakh Cr 65
TCS India $170 Billion ₹14 Lakh Cr 85

Market Cap Impact on Investment Strategy

  1. Large Cap Investing: Stable returns, lower risk, suitable for conservative investors
  2. Mid Cap Strategy: Balance of growth and stability, moderate risk
  3. Small Cap Approach: High growth potential, high risk, needs research
  4. Multi Cap Funds: Diversified across market caps for balanced exposure
  5. Flexi Cap Strategy: Dynamic allocation based on market conditions

Factors Affecting Market Capitalization

  • Share Price Movement: Daily price changes directly impact market cap
  • Share Buybacks: Reduces outstanding shares, may increase per-share value
  • Stock Splits: Increases shares but maintains same market cap
  • New Share Issuance: Dilution may reduce per-share price
  • Market Sentiment: Investor perception drives price and market cap
  • Corporate Actions: Mergers, demergers affect market valuation

Market Cap Calculator - Tips for Investors

  1. Don't Rely Solely on Market Cap: Consider other fundamentals
  2. Compare Within Sector: Market cap varies significantly across sectors
  3. Check Free Float: Higher free float means better liquidity
  4. Monitor Changes: Track market cap trends over time
  5. Consider Enterprise Value: Includes debt for complete picture
  6. Index Inclusion: Large caps get included in major indices
  7. Currency Impact: For global comparison, consider exchange rates

Frequently Asked Questions About Market Cap Calculator

Q: What is market capitalization in simple terms?

A: Market capitalization is the total value of a company's shares in the stock market, calculated by multiplying current share price with total outstanding shares. It represents what the market thinks the company is worth.

Q: How to calculate market cap of unlisted company?

A: For unlisted companies, market cap is estimated using comparable company analysis, DCF valuation, or recent transaction prices. Our calculator works for listed companies with known share prices.

Q: Is high market cap always good?

A: Not necessarily. High market cap indicates size and stability but may offer lower growth potential. Small caps may provide higher returns but with greater risk. Choose based on your risk appetite.

Q: What is the difference between market cap and enterprise value?

A: Market cap = Shares × Price. Enterprise Value = Market Cap + Debt - Cash. EV gives a more complete picture including the company's debt obligations.

Q: Can market cap be negative?

A: No, market cap cannot be negative as it's share price (always positive) multiplied by shares outstanding. However, enterprise value can be negative if cash exceeds market cap plus debt.

Q: How often should I check market cap?

A: For long-term investors, quarterly review is sufficient. Active traders may monitor daily. Major changes in market cap can signal important developments.

Q: What is free float market cap?

A: Free float market cap only considers shares available for public trading, excluding promoter holdings and locked-in shares. It's used for index calculation and weightage.

Q: Why do companies with losses have high market caps?

A: Market cap reflects future growth expectations, not just current profits. Tech startups often have high valuations based on growth potential despite current losses.

Q: How accurate is the market cap calculator?

A: Our market capitalization calculator provides 100% accurate results based on the share price and outstanding shares you input. For listed companies, use real-time market data.

Q: Can I compare companies across countries using market cap?

A: Yes, but convert to a common currency (usually USD) for accurate comparison. Our calculator supports multiple currencies for international comparisons.