Finanzas

Price-to-Book Ratio (P/B) Calculator

Q: What is a good P/B ratio?

It depends on industry. Banks typically trade at 1.0–1.5x book value, utilities at 1.2–2.0x, while tech companies often trade at 5–15x. A P/B below 1.0 may indicate undervaluation or financial distress.

Q: How is P/B ratio different from P/E ratio?

P/B compares stock price to book value (assets minus liabilities), while P/E compares price to earnings. P/B works best for asset-heavy businesses like banks; P/E is better for profitable service companies.

Q: Is a low P/B always a buying opportunity?

Not necessarily. A P/B below 1.0 can signal undervaluation, but it may also mean assets are worth less than shown, earnings are declining, or the market expects future losses.

Q: Which types of stocks is P/B most useful for?

P/B works best for banks, insurance companies, real estate (REITs), utilities, and industrial companies. It's less useful for tech, software, and service companies where intangible assets drive value.

Q: Where do I find shareholders' equity and shares outstanding?

Both are on a company's balance sheet in quarterly (10-Q) or annual (10-K) filings on the SEC's EDGAR database, or on financial sites like Yahoo Finance, Seeking Alpha, or your brokerage.

Q: Does inflation affect book value in P/B calculations?

In high-inflation environments, historical cost book values can be distorted. Some analysts adjust book value for inflation to get a more realistic picture of asset values.

Q: What is tangible book value?

Tangible book value excludes intangible assets like goodwill and patents. It's more conservative than regular book value. Banks often report both to show hard assets backing shareholder equity.

Q: Can I use P/B for penny stocks?

Yes, but be cautious. Many micro-cap stocks have unreliable data, inflated assets, or negative book value. Always verify the data independently before investing.

Q: How does P/B work for ADRs and international stocks?

The P/B ratio works the same globally. For ADRs, use the underlying company's equity and share count in its home currency; the ratio remains constant regardless of ADR conversion.

Calculate P/B ratio for stocks vs. sector averages. Free calculator to find undervalued stocks by book value and identify value investing opportunities.

🗓️ Updated June 2026 Reviewed by Martín Rodríguez

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Reviewed by: Martín Rodríguez (editorial policy ) · Last reviewed: Jun 20, 2026

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Sector Average P/B Ratio

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The P/B (Price-to-Book) ratio compares the market price with the book value (shareholders' equity) per share. A P/B < 1 means the stock trades below its book value. Essential for valuing banks, insurance companies, and asset-heavy businesses.

When to use this calculator

Value bank and insurance stocks.
Find stocks trading below book value.
Compare P/B ratios across sector peers.
Complement analysis with P/E and other ratios.
Analyze stocks by shareholder equity value.

Typical P/B Ratio Ranges by Sector

Sector	Typical P/B Range	Why P/B varies
Banks	0.8 – 1.5×	Loan portfolios = tangible assets; mark-to-market losses compress P/B
Insurance	1.0 – 1.8×	Reserves and float drive book value; P/B tracks underwriting quality
Utilities	1.2 – 2.0×	Regulated asset base; stable but capital-intensive
Industrial	1.8 – 3.0×	Mix of tangible plant and equipment with some brand value
Consumer	3.0 – 5.0×	Brand equity and distribution networks inflate P/B above book
Technology	4.0 – 10.0×	Intangible IP and network effects; book value understates earning power
Software / SaaS	6.0 – 20.0×	Near-zero tangible assets; P/B less meaningful than P/S or EV/Revenue

Source: Aswath Damodaran (NYU Stern) — Price/Book Value Ratios by Industry; CFA Institute — Equity Valuation (2026)

How it works

What Is the P/B Ratio?

The P/B (Price-to-Book) ratio compares the market price to the book value (shareholders' equity) per share. A P/B = 1 means the market is paying exactly the book value. Below 1 suggests undervaluation (or financial distress); above 3 often signals overvaluation in traditional sectors, but is normal for tech stocks.

Typical P/B Ranges by Industry

Sector	Average P/B
Banks	0.8 – 1.5
Insurance	1.0 – 1.8
Utilities	1.2 – 2.0
Industrial	1.8 – 3.0
Consumer	3.0 – 5.0
Technology	4.0 – 10.0
Software	6.0 – 20.0

Formula

Book Value Per Share = Shareholders' Equity / Shares Outstanding

P/B Ratio = Stock Price / Book Value Per Share

When to Use & Common Mistakes

Don't rely on it for pure tech (software with few tangible assets): most have P/B > 5 without being overpriced.

Excellent for banks (assets are concrete loan portfolios, easy to measure).

P/B < 1 can be an opportunity or a red flag (overvalued assets on balance sheet).

Use alongside P/E Ratio for complete valuation analysis.

Real Example: Bank Stock at $50

Given: stock price = $50, shareholders' equity = $5B, shares outstanding = 100M, sector avg P/B = 1.5.

Book Value Per Share: $5B / 100M = $50.

P/B Ratio: $50 / $50 = 1.0.

Fair Value by Sector: $50 × 1.5 = $75.

Valuation: trading 33% below sector average — potential undervaluation opportunity.

P/B of 1.0 vs. 1.5 sector average: potential undervaluation, warrants investigating balance sheet fundamentals.

Disclaimer: Los resultados son orientativos y no constituyen asesoramiento financiero individualizado. Antes de tomar decisiones con impacto, consultá con un asesor financiero registrado en la CNV o contador público matriculado.

Frequently asked questions

What is a good P/B ratio?

It depends on industry. Banks typically trade at 1.0–1.5x book value, utilities at 1.2–2.0x, while tech companies often trade at 5–15x. A P/B below 1.0 may indicate undervaluation or financial distress.

How is P/B ratio different from P/E ratio?

P/B compares stock price to book value (assets minus liabilities), while P/E compares price to earnings. P/B works best for asset-heavy businesses like banks; P/E is better for profitable service companies.

Is a low P/B always a buying opportunity?

Not necessarily. A P/B below 1.0 can signal undervaluation, but it may also mean assets are worth less than shown, earnings are declining, or the market expects future losses.

Which types of stocks is P/B most useful for?

P/B works best for banks, insurance companies, real estate (REITs), utilities, and industrial companies. It's less useful for tech, software, and service companies where intangible assets drive value.

Where do I find shareholders' equity and shares outstanding?

Both are on a company's balance sheet in quarterly (10-Q) or annual (10-K) filings on the SEC's EDGAR database, or on financial sites like Yahoo Finance, Seeking Alpha, or your brokerage.

Does inflation affect book value in P/B calculations?

In high-inflation environments, historical cost book values can be distorted. Some analysts adjust book value for inflation to get a more realistic picture of asset values.

What is tangible book value?

Tangible book value excludes intangible assets like goodwill and patents. It's more conservative than regular book value. Banks often report both to show hard assets backing shareholder equity.

Can I use P/B for penny stocks?

Yes, but be cautious. Many micro-cap stocks have unreliable data, inflated assets, or negative book value. Always verify the data independently before investing.

How does P/B work for ADRs and international stocks?

The P/B ratio works the same globally. For ADRs, use the underlying company's equity and share count in its home currency; the ratio remains constant regardless of ADR conversion.

Sources & references

U.S. Securities and Exchange Commission — EDGAR (10-K / 10-Q filings) — SEC (2026)
Investopedia — Price-to-Book (P/B) Ratio — Investopedia (2026)
Aswath Damodaran (NYU Stern) — Price/Book Value Ratios by Industry — NYU Stern School of Business (2026)
CFA Institute — Equity Valuation: Price Multiples — CFA Institute (2026)

Methodology & trust

Editorial

Calculadora de finanzas revisada por el equipo editorial de Hacé Cuentas, contrastada con U.S. Securities and Exchange Commission — EDGAR (10-K / 10-Q filings), según nuestra política editorial y metodología.

Updates

Última revisión: June 20, 2026. Los parámetros se verifican periódicamente con las fuentes citadas.

Privacy

Calculations run 100% in your browser. We do not store or transmit your data.

Limitations

Indicative results. For critical decisions, consult a professional.

📌 How to cite this calculator

Rodríguez, M. (2026). Price-to-Book Ratio (P/B) Calculator. Hacé Cuentas. https://hacecuentas.com/price-to-book-ratio

Contenido bajo licencia CC-BY 4.0 — reutilizable citando la fuente con enlace a Hacé Cuentas.

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