P/E ratio calculator
See how a share price compares with earnings per share. Use consistent currencies and a clearly defined earnings period.
How it works
Share price ÷ earnings per share
The starting numbers are fictional examples. This calculator does not fetch market data or identify a suitable investment.
Keep the earnings period consistent
A $60 share price divided by $3 in earnings per share produces a P/E of 20. Use trailing earnings for a trailing P/E, or an estimate for forward P/E. Comparisons become misleading if the periods or accounting measures differ.
When earnings are zero the ratio is undefined. Negative earnings can produce a mathematical negative ratio, but it is not useful for the usual P/E valuation comparison. This tool flags that situation instead of presenting a negative result as cheap.
Keep researching
Check the source and date of your inputs, use the same currency, and understand what the calculation leaves out. Read the related research guide.