Plan the trade

Risk and position size calculator

Enter your balance, risk, entry, and stop to see a whole-unit practice size. Add a target to map the reward-to-risk ratio.

Practice inputs

Enter the account and price values you want to use for the calculation.

Leave blank to omit reward-to-risk. Long targets go above entry; short targets go below it.

Validated price map

Price ladder

long · 50 whole units

Lower price Levels are ordered from low to high Higher price
  1. Stop 48 0.0000 percent of the displayed price range
  2. Entry 50 33.3333 percent of the displayed price range
  3. Target 54 100.0000 percent of the displayed price range
Risk zone
Stop to entry · 33.3333% of displayed range
Reward zone
Entry to target · 66.6667% of displayed range · 2.00:1

Calculation

Amount at risk
$100.00
Price risk per unit
$2.00
Whole units
50
Notional value
$2500.00
Reward-to-risk ratio
2.00:1

How the calculator works

Formulas

  • Amount at risk = balance × risk % ÷ 100
  • Price risk = |entry − stop|
  • Whole units = floor(amount at risk ÷ price risk)
  • Notional value = whole units × entry
  • Reward-to-risk = |target − entry| ÷ price risk

Calculation scope

The calculation excludes leverage, contract multipliers, fees, slippage, taxes, liquidity, and changing market prices. Whole units are always rounded down.

Educational practice aid only; not financial advice or a recommendation.

Put a written plan into practice

Use the replay simulator to practice decisions, or see all ChartDojo features.

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