ProEA · Free tools
Free trading calculators
Six calculators for prop-firm rules, drawdown, ruin, and gold position sizing — every formula shown on the page, nothing you type ever uploaded.
Consistency rule calculator
Many prop firms cap how much of your total profit can come from a single best day — commonly around 30%, though the exact number and definition vary by firm. Enter your best day and total profit to see your percentage and, if you're over the line, exactly how much more profit closes the gap.
consistency % = best day ÷ total profit × 100Drawdown recovery calculator
A drawdown and the gain that undoes it are not symmetric — losing 20% takes a 25% gain to recover, and losing 50% takes a full 100%. Enter your drawdown to see the exact gain required, and scan the table for every common step from 5% to 90%.
gain required = drawdown ÷ (100 − drawdown) × 100Profit target calculator
Turn a prop-firm profit target (often 8-10% of account size) into real numbers: the dollar target, a per-day pace across your trading days, and how many trades your own win rate and reward multiple realistically need. If your inputs don't add up to a positive edge, the calculator says so plainly instead of showing a number that isn't real.
trades ≈ target ÷ (risk × (win% × R − loss%))Risk of ruin calculator
Risk of ruin is the odds that a losing streak takes your account down to a threshold you set, before any winning streak can recover it. This estimates that honestly with a seeded Monte-Carlo simulation over your win rate, reward-to-risk, and position size — not a closed-form formula that hides its assumptions.
P(ruin) — estimated over 5,000 seeded pathsMonte Carlo trading simulator
See the range of outcomes your win rate, reward multiple, and risk per trade can actually produce — not just one average path. Thousands of simulated equity curves show percentile bands, typical and worst-case drawdown, and how much variance is normal before any of it involves real money.
equity ×= 1 + risk × R on a win · 1 − risk on a lossXAUUSD lot size calculator
Position size gold trades from your account balance, risk percent, and stop distance in dollars — straight to a lot size, with every step of the math shown. Lots are always floored down, never rounded up, so your real dollar risk never exceeds what you set.
lots = risk $ ÷ (stop $ × 100 per lot), floored to 0.01