TopToolAIProp Trading Risk & Position Size Calculator
Works out how big a position you can safely take without breaking your own risk rule or a prop firm's daily-loss and max-drawdown limits. Enter your account balance, how much you're willing to risk per trade, and your entry/stop-loss prices, and it returns the position size, dollar risk, and how many losing trades in a row it would take to hit each limit.
How to use Prop Trading Risk & Position Size Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
How to use Prop Trading Risk & Position Size Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
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1
Account balance Text
Your current trading account balance. Position size is based on it.
Example: 10000
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2
Risk per trade % Text
Most traders use 0.5-2% per trade.
Example: 1
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3
Entry price Text
The price at which you plan to enter the trade.
Example: 100
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4
Stop-loss price Text
The price at which you exit if the trade goes wrong. The gap from entry decides your risk per unit.
Example: 98
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5
Daily loss limit % Text
Many prop firms set this at 5%.
Example: 5
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6
Max overall drawdown % Text
Often 10% for a standard challenge.
Example: 10
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7
Press “Calculate”
Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.
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8
Read your result
Your answer appears under the button, with a short note in plain words where it helps. Change any box and press again to compare different numbers.
Prop Trading Risk & Position Size Calculator FAQs
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