OKX perpetual toolkit — seven tools.
Six perpetual calculators — position size, liq price, funding-rate arbitrage, grid profit, Kelly sizing, leverage cost annualised — plus a tick-off account & KYC setup checklist. All math runs in your browser — inputs never leave the tab. Where OKX exposes a public API (funding rate, mark price), the form auto-fills.
Perp Position Calculator
Enter capital, leverage, entry price — get notional, contract count, liq price (isolated/cross) and 1% adverse PnL. Pure client-side math.
Open tool →Funding Arbitrage Simulator
Plug in funding rate, capital and holding period to simulate the theoretical yield of shorting against spot, with annualised equivalent and per-settlement fee. Auto-fills from OKX live funding.
Open tool →Grid Profit Estimator
Enter price band, grid count and daily vol — estimate expected daily triggers, per-grid yield, net PnL after fees and capital usage. A math baseline for your grid bot.
Open tool →Kelly Position Calculator
Enter win rate and payoff; get full Kelly, half Kelly and quarter Kelly position sizes side by side. Crypto perps generally call for quarter Kelly — this tool shows all three tiers.
Open tool →Leverage Cost Annualised
Convert perpetual funding rate into an annualised equivalent so you can see the real carry cost of any leveraged perp position in plain percent-per-year terms.
Open tool →Liquidation Price Calculator
Enter entry, leverage, direction — compute the exact OKX perp liq price, the net distance, and partial-liquidation thresholds (80% / 90%). Essential risk math for any beginner.
Open tool →Not signed up yet? Tick it off step by step.
Done calculating? Go run it on OKX.
The calculator only lays the variables out. Open a 100-200 USDT position on OKX, then map each number in the tool to the field on the order ticket.