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.
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.
Risk Amount = Balance × Risk%, then Position Size = Risk Amount ÷ |Entry − Stop|"Lots" divides units by the contract size above — set it to 1 if you trade in raw units or shares.
Limitation: assumes your entry price is also your fill price — it does not add spread, commission or slippage.
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.
Risk Amount = |Entry − Stop| × Size, then Risk % = Risk Amount ÷ Balance × 100Limitation: uses the position size and prices you enter — it does not check them against a live account or broker order.
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.
RR = |Target − Entry| ÷ |Entry − Stop|, break-even win rate = Risk ÷ (Risk + Reward)Limitation: measures price distance only — it does not factor in spread, commission, or the likelihood of reaching the target.
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.
Distance = Risk Amount ÷ Size. Long: Stop = Entry − Distance. Short: Stop = Entry + DistanceLimitation: gives a theoretical stop price — actual fills can differ because of slippage or price gaps. See the stop loss & take profit guide.
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.
TP = Entry + (RR × |Entry − Stop|). Short TP = Entry − (RR × |Entry − Stop|)Limitation: the price shown is a target, not a guarantee — real exits depend on market liquidity and order type.
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.
Leverage = Position Value ÷ Equity · Margin = Position Value ÷ Leverage · Max Position = Equity × LeverageLimitation: shows leverage and margin only — it does not model margin calls, liquidation levels, or your broker's maintenance margin rules.
Drawdown Calculator
A trading account drawdown calculator: measure the maximum drawdown percentage from a peak balance, and the gain required to recover it.
Drawdown % = (Peak − Current) ÷ Peak × 100 · Recovery needed = (Peak − Current) ÷ Current × 100Limitation: based only on the peak and current balance you enter — it does not track your account automatically.
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.
ROI % = (Final − Initial) ÷ Initial × 100 · Annualized = ((Final ÷ Initial)^(365/days) − 1) × 100Limitation: a simple point-to-point calculation — it does not account for the timing of deposits or withdrawals within the period.
Compound Investment Calculator
This compound investment and compound growth calculator projects the future value of an investment with regular contributions and compounding returns.
FV = P(1+r/n)^(nt) + PMT × (((1+r/n)^(nt) − 1) ÷ (r/n))Limitation: assumes a constant rate and regular contributions — actual investment returns vary and are never guaranteed.
What each calculator does
A quick reference for all nine tools above. Each uses a standard formula shown openly on its tab — see the guides for worked examples.
Position Size
Converts your account balance, risk % and stop distance into the number of units or lots to trade.
Trading Risk %
Checks what percentage of your account a specific entry, stop and position size puts at risk.
Risk/Reward
Compares risk and reward distance to give a ratio and the win rate needed to break even.
Stop Loss
Works backward from a risk amount and position size to a theoretical stop-loss price.
Take Profit
Derives a take-profit price from your stop distance and a target risk/reward ratio.
Leverage
Calculates leverage used, or the margin and maximum position size a given leverage allows.
Drawdown
Measures the percentage drop from a peak balance and the gain needed to recover it.
ROI
Turns an initial and final value into a return percentage, with an optional annualized rate.
Compound Investment
Projects future value from a starting amount, regular contributions and a compounding rate.