Free · Equity investment calculators 📈

Share Price to Earnings Multiple Calculator

Divide a share price by matching earnings per share.

  • Formula & worked example
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Edit a calculated value to solve backwards, or lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Results are estimates for planning and education. Confirm rates, taxes, fees, and legal requirements with the relevant institution or a qualified professional before making a financial decision.

Formula and method

A share price of 60 and earnings per share of 3 give a price-to-earnings multiple of 20 times.

P/E multiple = share price ÷ earnings per share

Worked example

Enter these known values and leave the other values blank.

Price per share
60 USD
Earnings per share
3 USD
P/E ratio
20

Assumptions and limitations

  • Either convention can be calculated, but label the result accordingly and use a consistent share basis. Zero earnings make the ratio undefined. Negative earnings produce a negative arithmetic ratio that is generally not useful for ordinary P/E comparisons. The multiple alone does not determine fair value.
  • Use consistent units, dates and financial definitions. The calculated result follows the stated assumptions and the amounts entered.

Common questions

Should I use trailing or forecast earnings?

Either convention can be calculated, but label the result accordingly and use a consistent share basis. Zero earnings make the ratio undefined. Negative earnings produce a negative arithmetic ratio that is generally not useful for ordinary P/E comparisons. The multiple alone does not determine fair value.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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