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Position size calculator

How many shares or lots to buy so a stop loss risks only the percentage you choose.

  • Free
  • No sign-up
  • Works on any device

About Position size calculator

Works out how many shares or lots to buy so a stop loss risks only the percentage of your account you choose. Position size equals the amount at risk divided by the distance to the stop. Risking 1 percent per trade is a common rule that keeps losing streaks survivable.

How to use Position size calculator

  1. Enter your numbers above.
  2. The result updates instantly as you type.
  3. Change any value to compare different cases.

Why use this tool?

Also known as

Frequently asked questions

How much should I risk per trade?

Many traders keep it between 0.5 and 2 percent of the account. Small risk per trade protects your capital through a string of losses.

Is Position size calculator free?

Yes. Position size calculator on Toolipedia is free to use, with no sign-up and no watermark.

Is it safe to use?

Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.

Does it work on my phone?

Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.

Do I need an account?

No. Just open the page and use the tool. There's no sign-up and no email needed.

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