Tools Built for
Serious Traders
Every calculation you need before, during, and after a trade. Fast, accurate, and always free.
Position Size Calculator
Calculate the optimal number of shares or contracts based on your account size and risk tolerance.
Risk/Reward Calculator
Evaluate trade quality by calculating risk/reward ratio and expected value before entering a position.
Compound Interest Calculator
Visualize how your trading account grows over time with consistent returns and compounding.
Profit / Loss Calculator
Quickly calculate profit or loss on any trade including commissions and fees.
Pip Calculator
Calculate the monetary value of a single pip for any forex pair and lot size in your account currency.
Margin Calculator
Calculate the required margin and notional value for any leveraged position before you open it.
Lot Size Calculator
Find the exact number of lots to trade for a fixed risk, based on your stop-loss in pips.
Break-Even Calculator
Find the price your trade must reach to cover all commissions and fees before making a profit.
Free trading calculators for every step of a trade
PosSize is a free, no-signup toolkit that helps traders make faster, more disciplined decisions. Before a trade, the position size calculator tells you exactly how much to trade for a fixed risk, and the risk/reward calculator screens whether a setup is worth taking. During and after, the profit/loss calculator shows your true net result, while the pip and margin calculators handle leveraged forex positions. The compound interest calculator projects long-term account growth.
Every tool runs entirely in your browser, works on mobile, and is always free — no accounts, no paywalls, no limits.
Frequently asked questions
Are these trading calculators really free?+
Yes. Every PosSize calculator is completely free, requires no signup or account, and runs entirely in your browser. There are no paywalls or usage limits.
Which calculator should I use first?+
Start with the Position Size Calculator — it determines how many shares or contracts to trade for a fixed risk, which is the foundation of risk management. Then use the Risk/Reward and Profit/Loss tools to plan and review each trade.
Do the calculators work for forex, stocks, and crypto?+
Yes. The position size, risk/reward, profit/loss and compound tools work for any market. The Pip and Margin calculators are tailored to leveraged forex trading.
Is my data sent anywhere?+
No. All calculations happen locally in your browser. PosSize does not collect or store the figures you enter.