Free trading calculators

Twelve free calculators for the numbers behind disciplined trading: how much to trade, how much you risk, what a strategy earns per trade and how deep a drawdown can go. Each page shows the formula and a worked example.

• Position size calculatorEnter capital, risk %, entry and stop to get the quantity that loses exactly your chosen risk if the stop is hit.
• Risk reward calculatorEnter entry, stop and target to get the reward-to-risk ratio and the win rate you need just to break even before costs.
• Forex lot size calculatorEnter balance, risk %, stop in pips and pip value per lot to get standard, mini and micro lots for a fixed account risk.
• Pip value calculatorEnter position size, pip size and the quote-to-account rate to see what one pip is worth in your quote and account currency.
• Risk of ruin calculatorSimulates thousands of accounts with your win rate, payoff and risk per trade to show how often a deep drawdown happens.
• Drawdown recovery calculatorEnter a drawdown percentage to see the gain needed to get back to the previous peak. A 50% loss needs a 100% gain.
• Breakeven win rate calculatorEnter your reward-to-risk and cost per trade in R to find the minimum win rate at which a strategy stops losing money.
• Expectancy calculatorEnter win rate, average win and average loss to see what a strategy earns per trade on average, in money and in R.
• Compounding calculatorEnter a starting amount, return per period, number of periods and optional additions to see the final value and total gain.
• Kelly criterion calculatorEnter win rate and payoff ratio to see the full and half Kelly fraction, and whether your numbers show any edge at all.
• Options profit calculatorPick call or put, long or short, enter strike, premium, price at expiry and quantity to see profit, breakeven and max loss.
• Profit factor calculatorEnter total gross profit and total gross loss from your trades to see the profit factor and whether the record made money.

Calculators for Indian F&O turnover, tax audit and charges will be added after review by a Chartered Accountant. Not investment or tax advice.