Trading & Investment Calculator

Nine calculators, one page. Pick a tool, enter your numbers, and get an instant, formula-backed result — calculated entirely in your browser.

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Position Size Calculator

Find the position size that keeps your risk at a fixed percentage of your account, based on your entry and stop-loss price. Works as a forex position size calculator (lot size), a crypto position size calculator, or for stocks — see the full position size guide.

Account balance

Risk per trade (%)

Entry price

Stop-loss price

Units per lot / contract (optional)

Formula: Risk Amount = Balance × Risk%, then Position Size = Risk Amount ÷ |Entry − Stop|

Position size (units)—

Position size (lots)—

Amount at risk—

Position value—

"Lots" divides units by the contract size above — set it to 1 if you trade in raw units or shares.

Trading Risk % Calculator

A trading risk calculator and risk per trade calculator in one: check exactly what percentage of your account a specific trade puts at risk, given your entry, stop and position size.

Account balance

Position size (units)

Entry price

Stop-loss price

Formula: Risk Amount = |Entry − Stop| × Size, then Risk % = Risk Amount ÷ Balance × 100

Risk (%)—

Amount at risk—

Risk/Reward Calculator

A risk/reward (R:R) calculator for trading: work out the risk-to-reward ratio of a trade and the win rate you'd need just to break even. See the full risk/reward ratio guide.

Entry price

Stop-loss price

Take-profit price

Formula: RR = |Target − Entry| ÷ |Entry − Stop|, break-even win rate = Risk ÷ (Risk + Reward)

Risk : Reward—

Risk distance—

Reward distance—

Break-even win rate needed—

Stop Loss Calculator

A stop loss calculator for trading: work out the exact stop-loss price that matches a fixed risk amount and position size. See the full stop loss & take profit guide.

Account balance

Risk per trade (%)

Entry price

Position size (units)

Formula: Distance = Risk Amount ÷ Size. Long: Stop = Entry − Distance. Short: Stop = Entry + Distance

Stop-loss price—

Stop distance—

Amount at risk—

Take Profit Calculator

A take profit calculator for trading: set a take-profit price that targets a specific risk/reward ratio from your entry and stop. See the full stop loss & take profit guide.

Entry price

Stop-loss price

Target risk/reward ratio

Formula: Long TP = Entry + (RR × |Entry − Stop|). Short TP = Entry − (RR × |Entry − Stop|)

Take-profit price—

Reward distance—

Leverage Calculator

A leverage calculator for trading forex, crypto or any margin position — calculate the leverage a position uses, or the margin and maximum position size a given leverage allows. See the full leverage & margin guide.

Account equity

Position value

Leverage (used only in "find margin" mode)

Formulas: Leverage = Position Value ÷ Equity · Margin = Position Value ÷ Leverage · Max Position = Equity × Leverage

Leverage—

Margin required—

Max position value—

Drawdown Calculator

A trading account drawdown calculator: measure the maximum drawdown percentage from a peak balance, and the gain required to recover it.

Peak balance

Current balance

Formula: Drawdown % = (Peak − Current) ÷ Peak × 100 · Recovery needed = (Peak − Current) ÷ Current × 100

Drawdown—

Amount lost from peak—

Gain needed to recover—

Trading ROI Calculator

An investment ROI calculator for trading: work out return on investment as a percentage, plus an annualized rate if you enter a holding period.

Initial investment

Final value

Holding period (days, optional)

Formula: ROI % = (Final − Initial) ÷ Initial × 100 · Annualized = ((Final ÷ Initial)^(365/days) − 1) × 100

ROI—

Net profit—

Annualized ROI—

Compound Investment Calculator

This compound investment and compound growth calculator projects the future value of an investment with regular contributions and compounding returns.

Starting amount

Contribution per period

Annual interest rate (%)

Years

Compounding / contribution frequency

Formula: FV = P(1+r/n)^(nt) + PMT × (((1+r/n)^(nt) − 1) ÷ (r/n))

Final balance—

Total contributed—

Interest earned—

These calculators are educational tools for planning and risk management. They do not constitute financial advice and do not guarantee trading or investment results. See our Financial Disclaimer.