Trading calculators
The essentials for sizing a trade and sanity-checking a strategy. Everything runs in your browser — nothing is sent anywhere.
Position size
The lot size that risks a fixed % of your balance on a given stop.
Open calculator →Pip value
How much one pip is worth for your position size.
Open calculator →Required margin
Margin locked up to open a position at your leverage.
Open calculator →Risk of ruin
Monte-Carlo chance a strategy hits your ruin threshold within 500 trades.
Open calculator →Fibonacci retracement & extension
Retracement and extension price levels from a swing high and low.
Open calculator →Pivot points
Classic, Woodie, Camarilla and Fibonacci pivots from yesterday's H/L/C.
Open calculator →Compounding
Growth of a balance at a fixed % per period, with optional regular deposits.
Open calculator →Drawdown recovery
The gain needed to get back to break-even after a loss, and how long it takes.
Open calculator →Leverage & margin level
Used margin, free margin, margin level % and distance to stop-out.
Open calculator →Profit / loss
P/L in pips and money from entry, exit, lots and direction.
Open calculator →Swap / overnight cost
What holding a position for N nights costs (or earns), including triple-swap Wednesday.
Open calculator →Rebate
Monthly and yearly cash-back from a per-lot rebate, and how much commission it covers.
Open calculator →Kelly criterion
The mathematically optimal risk per trade from win rate and payoff — and why to halve it.
Open calculator →Slippage cost
What execution slippage quietly costs you per month and as a share of profit.
Open calculator →Expectancy
Average money made per trade from win rate and average win/loss, scaled to a month.
Open calculator →Vetting an EA or signal?
Risk of ruin, drawdown, and profit factor matter more than a big gain number. Read our guide on how to tell a real track record from a dressed-up one.
How to vet an EA →