Free trading tools
Free trading calculators.
Five quick calculators for position sizing, risk-reward, expectancy, profit factor and options P/L - to size every trade and know your edge before you click buy.
Position size calculator
Know exactly how many shares to buy based on your risk tolerance, account size, and stop-loss placement.
Risk-reward calculator
Compare potential profit against potential loss before entering any setup.
Expectancy calculator
How much your strategy earns (or loses) on average per trade.
Profit factor calculator
Whether your gross profits meaningfully outweigh your gross losses.
OpenOptions P/L calculator
See the full payoff profile for any call or put before you place it.
Size every trade the same way
Consistent sizing keeps one bad trade from denting the account - and lets your edge compound.
Know your edge in numbers
Expectancy and profit factor turn a hunch about your strategy into a number you can trust.
Decide before you click buy
Run the numbers in seconds so every entry is a deliberate decision, not a gut reaction.
The fundamentals
Risk management, by the numbers.
Every successful trader relies on a repeatable process for managing risk and evaluating setups before committing capital. These calculators turn your parameters - account size, stop loss, win rate - into concrete numbers you can act on.
Position sizing & risk management
Position sizing is the cornerstone of risk management. A position size calculator tells you exactly how many shares to trade based on your account balance, the percentage you're willing to risk, and the distance to your stop loss - so you never risk too much on a single trade.
Risk-reward ratio & expectancy
A risk-reward calculator helps you weigh potential loss against potential gain before you click buy. Paired with a trading expectancy calculator, you can go further: expectancy combines win rate with average win and loss to show whether your strategy actually makes money over time.
Evaluating strategy performance
A profit factor calculator divides gross profits by gross losses - anything above 1.0 means you're net profitable. Together these calculators let you evaluate strategy performance with real numbers instead of gut feelings.
Keep exploring
The rest of the toolkit.
Want these calculated automatically?
TradeOlogy tracks your trades and computes risk, reward, expectancy and more - so you never have to open a calculator again.
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