Free trading calculators
Prepare your trades: position size, pip value, margin, risk of ruin… All in your browser, no account, no data sent.
StrixFX opens in early 2027.
Trade setup
Position size
Work out how many lots to open from your account size, risk percentage and stop loss distance in pips. Free, no sign-up, runs entirely in your browser.
Profit
Work out the profit or loss of a forex, index or metals trade from the entry price, the exit price and the lot size. Free in-browser calculator, no sign-up.
Pip value
Work out what one pip is worth for any currency pair, based on your lot size and account currency. Free, instant, and everything runs in your browser.
Margin
Work out the margin a forex or CFD position ties up at any leverage: notional value and required margin, in 9 account currencies, free and with no sign-up.
ATR size
Size a position from the ATR: stop distance based on recent volatility, risk as a percentage of your account, result shown in lots and units. Free, no sign-up.
Lot size
Convert a volume between standard, mini and micro lots and see how many units you are really trading. Free, no signup, all 3 sizes at once.
Risk / reward
Enter your entry, stop and target: get the reward-to-risk ratio and the minimum win rate you need to break even. Free, no signup.
Risk planning
Drawdown
Enter a loss percentage and see the exact gain required to get back to breakeven. Understand why a 50% drawdown takes a 100% gain to erase, instantly.
Risk of ruin
Estimate the probability of losing your entire trading account from your win rate, risk-reward ratio and risk per trade. Instant result, no sign-up needed.
Portfolio risk
Add up the risk on all your open positions and see it as a percentage of your account. A simple way to check your total exposure, right in your browser.
System analysis
Monte Carlo
Replay your trading system across hundreds of randomly drawn trade sequences. See the median, best and worst outcomes and how wide the range of paths really is.
Expectancy
Work out your strategy's expectancy from win rate, average win and average loss. See what a trade returned on average, in your currency and in R multiples.
Required win rate
Work out the minimum win rate you need to break even from your average win and average loss. Free, with no sign-up, everything runs inside your browser.
Kelly
Compute the Kelly criterion from your win rate and win/loss ratio, and see the half and quarter Kelly figures traders actually watch. Free, no sign-up.
Compound interest
See how a capital evolves at a constant rate, with regular contributions. Free, no signup · a tool to understand the mechanics, not to predict.