I built a simple position size calculator to stop myself from negotiating risk mid-trade

Question

One thing I noticed in my own trading is that position sizing becomes very "negotiable" once a setup looks really good.

You start thinking: "2% risk is too small… this setup is A+, I’ll size up."

So I built a small web-based calculator to make the risk number fixed before entering a trade.

It calculates:

• lot size based on account balance
• risk %
• stop loss distance
• spread adjustment
• risk/reward
• supports forex, gold and crypto pairs

Some traders already suggested interesting improvements like margin/leverage checks and session risk tracking.

Curious what features active traders would want in a tool like this.

Posted Mar 8, 2026, 1:09 PM UTC

23
Loading comments…