Trading Calculators

📐 Position Size

How many shares to buy based on your account risk.

Account size ($) Risk per trade (%) Entry price ($) Stop loss price ($)

Max risk ($)—

Risk per share

Shares to buy—

Position value—

% of account—

Rule: never risk more than 1–2% of your account on a single trade.

Is this trade worth taking? 2:1 is the minimum.

Entry price ($) Stop loss ($) Price target ($) Shares (optional)

Risk ($)—

Reward ($)—

R:R ratio—

Max loss—

Max gain—

Breakeven win rate—

At 2:1 R:R you only need to be right 34% of the time to be profitable.

Annual income and yield from a dividend position.

Stock price ($) Annual dividend per share ($) Number of shares Dividend reinvestment? (DRIP) Years to hold (if DRIP)

Dividend yield—

Annual income—

Quarterly income—

Monthly income—

After 10yr DRIP—

Dividend yield = annual DPS ÷ stock price. Above 4% is generally considered high yield.

What price do you need to break even after fees and slippage?

Buy price ($) Shares Commission / fees ($) Slippage estimate ($)

Total cost basis—

Break-even price—

Move needed—

Fees matter less on larger positions. $5 commission on a 1-share trade is 3%+ cost before you've made a penny.