Position size calculator
Size any futures trade from your account, risk % and stop. See quantity, notional, margin and whether your stop sits before the liquidation price.
Risk of ruin calculator
How likely is a deep drawdown with your win rate, reward:risk and risk per trade? Thousands of simulated trade sequences give you the odds.
Expectancy & R-multiple calculator
Turn your win rate and average win and loss into expectancy per trade, the break-even win rate and profit factor. Plus the R-multiple of any single trade.
Drawdown recovery & compounding calculator
See the gain you need to recover from any drawdown, how many losses in a row get you there, and how a steady return compounds over time.
Live funding rate tracker
Current perpetual funding rates for BTC, ETH, SOL and other majors across five exchanges, normalised to 8 hours and annualised. Updated every 5 minutes.
Liquidation price calculator
Estimate the liquidation price of a long or short perpetual on Binance, Bybit or OKX, in isolated or cross margin, with simplified maintenance margin tiers.
PnL & R-multiple calculator
Work out gross and net PnL of a long or short after maker and taker fees, the ROE on your margin at any leverage and the trade's R-multiple.
Risk/reward & break-even win rate calculator
Enter entry, stop and target to get the risk:reward ratio, the win rate you need to break even, and how fees change both.
Compound account growth calculator
Project your account from a starting balance and a return per trade, day or month, with optional regular withdrawals and a growth chart.
Crypto futures fee calculator
Maker and taker fees at the base tier for popular exchanges, the round-trip cost of a trade, a funding estimate for the time you hold, and the move you need to cover it.
Your journal does this maths from real trades
Sync Binance, Bybit, OKX, Bitget or Hyperliquid with a read-only key and Flowsense tracks your win rate, R, drawdowns and costly habits automatically. Free for 30 trades a month.
Your next 100 trades can be your best.
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