Free calculators for the math you should run before every trade, not after. Size a position to your risk, check a setup’s reward-to-risk, model the new intraday margin, or grab the journal template that turns trades into data. No signup, no wall. Part of the main day trading app comparison.
Run the numbers honestly and the calculators do their job. They can’t change the base rate, and most day traders lose money. Position sizing is risk control, not a profit guarantee.
Run the math
Calculators
Risk controlPosition size calculatorEnter your account, risk percentage, and stop. It returns the share size that caps your loss.Open the tool
Trade planningRisk-reward calculatorCheck the reward-to-risk on a setup before you take it, with entry, stop, and target.Open the tool
Margin rulesIntraday margin calculatorModel your buying power under the post-PDT intraday margin regime.Open the tool
P&LProfit calculatorWork out the dollar outcome of a trade across entry, exit, and share size.Open the tool
Review your trades
Journal template
Free downloadTrading journal templateA free template to log fills and tag setups, the habit that separates traders who improve from traders who repeat.Open the tool
The calculators handle the per-trade math; the journal template handles the review. For the concepts behind each one, the learn section explains position sizing, risk-reward, and the margin rules in full.