Free trading tools

Position Size Calculator

Work out position size from account balance, risk, entry and stop loss.

Best for

Setting trade size from a fixed account risk.

What you get

Risk amount, stop distance, position size and target profit.

Not for

Choosing a trade direction.

Formula

Position size equals the money you risk divided by the distance between entry and stop loss.

Example

On a $10,000 account with 1% risk and a $2 stop distance, the position size is 50 units.

Hexaplan verdict

Best used before every trade.

How position size works

Position size starts with the amount you are willing to lose if the stop is hit. The wider the stop, the smaller the size should be.

This keeps risk consistent across trades instead of guessing size from how confident you feel.

How to use this calculator

Enter account balance.
Choose risk per trade.
Add entry price and stop loss.
Add target price if you want reward shown.
Use the size before placing the order.

Common mistakes

Sizing from the target instead of the stop.
Moving the stop after entry.
Ignoring fees and spread.
Using the same size for every setup.
Increasing size after losses.

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FAQ

Do I need a take profit?

No. Entry and stop loss are enough for position size. Take profit only helps show planned reward.

What risk percentage should I use?

Use a level you can repeat through losing streaks. Many traders start small.

Does this include fees?

It shows the main size calculation. Check broker fees separately before trading.