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The desk's calculator.

Prop-firm-aware position sizing. Enforces the risk math so you stop sizing by gut and start protecting your drawdown the way the firm protects its capital.

CALCULATOR · 02

Prop Firm Position Size

CONTRACTS · $ RISK · DD USED

Inputs

InstrumentAccount Size

USD

e.g. 50000 for a $50k evalMax Drawdown

of account · e.g. 4 for $50k ApexRisk per Trade

of account · stay ≤ 1–2%Entry Price

planned fillStop Loss

hard stop price

Output

Contracts of ES · floor of (risk budget ÷ stop $/contract)

✓

$500.00

Actual $ at risk on this trade

25.00%

of max drawdown budget consumed if stopped

Stop dist.

5.00 pt

$/contract

$250.00

Risk budget

$500.00

Max DD $

$2,000.00

How it sizes. Risk budget = account × risk %. Contracts = floor(risk budget ÷ ($ per point × stop distance)). The desk's default is 1% per A+ setup, 0.5% for B-tier, never above 2%. The drawdown-used figure tells you what a single stop-out costs against your max-DD budget — if a single trade can consume more than 30% of it, you are taking eval-killing risk.

Educational only. This tool is not financial advice. Verify every value against your prop firm's exact rules — daily loss limits, trailing drawdown, and consistency requirements vary by firm.