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Risk management calculator

Computes the exact formulas from the risk course — stop distance sets position size, and performance is measured in R.

Set the stop level first, then size down to fit that distance.

Lesson for reading this screen →All screens guideGlossary

Trade plan input

Enter once and position size, reward-to-risk, expectancy, and split placement are computed together. Stop distance sets position size — the wider the stop, the smaller the position.

Split take-profit

With a single target, “when to take how much off” cannot be computed. Enter per-leg target prices and weights to see realized P&L and what remains.

Results

SideLong (stop below)
Risk amount (1R)₩100,000
Stop distance5.00%
Position size₩2,000,000
Reward-to-risk (R:R)1 : 2.00
Expectancy per trade+0.20R
Profit at target₩200,000

How to read these results

  • Stop distance, not conviction, sets position size. You do not size up because a spot looks good — a closer stop is what allows a larger position.
  • With positive expectancy, a low win rate is fine. Even at a 40% win rate, a 1:2 risk-reward ratio gives +0.20R per trade. Do not judge by win rate alone.
  • Splitting is a tool for dividing risk, not for lowering your average price. Total risk is derived from each leg's own stop distance — even when split, a full fill stopped out loses exactly 1R.
  • The stop price here must come from structure, not arithmetic — decide where support or resistance breaks first, then enter the numbers.
Position sizing calculator — 1% rule, reward-to-risk and R | MarketSurfer