Risk amount is your line in the sand
If the trade hits your stop, this is the dollar amount your account will lose. If that number makes you flinch, the position is too big — full stop.
Free trader tools
Position Size Calculator
Punch in your equity, the percent you want to risk, your stop distance, and the pip value. We give you back the lot size that actually keeps you alive — not the one your gut wants you to take.
Sizing is the only number you fully control before the trade fires.
MindTrajour_PositionSize
What this number actually means
Three things to anchor before you click Buy.
Lot size is non-negotiable
Round down, never up. The cost of a slightly smaller position is missed upside; the cost of a slightly larger one is broken risk discipline. They are not symmetric.
Risk-per-pip kills second-guessing
Once you know what each pip costs, you stop staring at P&L and start watching price. That's the difference between trading the chart and trading your account balance.
From calculator to journal
Sizing is step one. Logging is what makes it stick.
Run the math here, then log the trade in MindTrajour. We tie your sizing decision to the outcome and surface the patterns your gut keeps lying about.
No credit card required • Cancel anytime
Keep stacking your edge
Other calculators traders pair with this one.
risk
Risk/Reward Calculator
Pick a direction, drop in your entry, stop, and target. We hand back the dollar risk, the dollar reward, the R-multiple, and — the number every trader should know cold — the win rate you need to break even at this risk/reward.
Open toolrisk
Kelly Criterion Calculator
Drop in your win rate, average win, and average loss. The calculator returns the full-Kelly stake — and the half- and quarter-Kelly versions that disciplined traders actually use, because full-Kelly drawdowns are real and brutal.
Open toolrisk
Lot Size Calculator
Drop in your position size in units and the calculator returns the equivalent in standard, mini, and micro lots. Useful when your broker quotes one and your strategy thinks in another, or when you're translating a position-size output into something you can actually order.
Open toolFrequently asked questions
Everything you need to know before sizing your next trade.