P/E Ratio Calculator
Assess stock valuation by comparing share price to earnings. Identify if a stock is cheap or expensive relative to its profit.
Valuation Engine
LSE Fundamental Analysis
Valuation Analysis
Enter share price and earnings to visualize the stock's market valuation score.
Tools You Might Need
Portfolio Return Calculator
Calculate weighted annual portfolio performance and CAGR.
Compound Interest Calculator
Project long-term wealth growth with SIP and compounding frequency.
Risk & Volatility Calculator
Calculate Standard Deviation and Beta for UK stocks.
Mastering the P/E Ratio: A Guide for UK Investors
The Price-to-Earnings (P/E) ratio is perhaps the most widely used metric for valuing stocks on the London Stock Exchange (LSE). It represents the amount an investor is willing to pay for every £1 of a company's earnings.
The Core Formula
P/E Ratio = Price Per Share ÷ Earnings Per Share (EPS)Why It Matters
A high P/E often suggests high growth expectations (like tech stocks), while a low P/E might indicate a "value" stock or a company facing challenges.
Trailing vs. Forward P/E
- Trailing P/E: Uses actual earnings from the past 12 months. It is reliable but looking backwards.
- Forward P/E: Uses estimated future earnings. Vital for growth investing but relies on analyst forecasts.
What is a "Good" P/E Ratio?
Context is king. A P/E of 20 might be cheap for a software company growing at 50% per year, but expensive for a utility company growing at 2%. Investors should always compare a stock's P/E to its Industry Average and its own Historical P/E.