Basically FuturesUnderstand it
Start with a maximum planned loss in dollars. Convert the stop distance into whole ticks, multiply by tick value, then account for fees and plausible slippage. Divide risk budget by total estimated per-contract exposure and round the contract count down. If the result is zero, the trade does not fit the proposed risk budget. No formula can guarantee losses won't exceed your estimate.
An MNQ stop of 30 points is 120 ticks. At $0.50/tick, the price-risk estimate is $60 per contract before fees and slippage. With a $50 risk budget, even one contract fails your rule.
Watch for this misconception
Rounding up to one contract because the calculator says zero. Zero is a legitimate and sometimes important answer.
Open the position-size calculator and find a case where no contract fits, then describe alternatives.
Risk and expectancy tools ↗What should you do if the smallest available contract exceeds your planned risk?
Check the sources
Hypothetical educational examples. Verify current product specifications and rules before making decisions.