Professional-grade calculators for smarter trading decisions. Calculate position sizes, analyze risk/reward ratios, find Fibonacci levels, and more — all instantly, for free, with no signup required. Whether you're trading stocks, forex, or crypto, these tools help you manage risk and maximize returns.
Calculate optimal trade size based on your risk tolerance and stop-loss distance
Use Calculator →Analyze the risk-to-reward ratio of any trade setup before entering
Use Calculator →Calculate your trading profits, losses, and return on investment
Use Calculator →See how your trading returns compound over time with regular contributions
Use Calculator →Calculate Fibonacci retracement and extension levels for any price range
Use Calculator →Generate support and resistance levels using multiple pivot point methods
Use Calculator →Calculate the Relative Strength Index from closing price data
Use Calculator →Measure the maximum peak-to-trough decline in your portfolio
Use Calculator →Not sure where to start? Follow this simple workflow to build a complete trading plan using our calculator suite. Each tool builds on the last, creating a comprehensive risk-managed trading strategy.
Begin with the Position Size Calculator — it's the foundation of risk management. This tool determines exactly how many shares, contracts, or units to buy based on your account size and risk tolerance. Professional traders never skip this step because proper position sizing is what separates disciplined traders from gamblers. Enter your account balance, risk percentage (typically 1-2%), entry price, and stop loss to get your optimal position size.
Before entering any trade, use the Risk/Reward Calculator to determine if the trade is worth taking. A good rule of thumb is to only take trades with at least a 1:2 risk/reward ratio, meaning you aim to make at least twice what you're risking. This calculator shows you the ratio instantly and tells you the minimum win rate needed to be profitable. If the setup doesn't offer favorable odds, skip it and wait for a better opportunity.
Use the Profit/Loss Calculator to understand your potential outcomes before risking real money. Input your entry price, exit price, position size, and commissions to see your exact profit or loss in dollars and percentage terms. This calculator is especially useful for comparing different exit strategies and understanding how commissions impact your returns. Never let fees eat into your profits without knowing their exact cost.
Finally, use the Compound Interest Calculator to see your long-term growth potential. Enter your starting balance, expected monthly return, and investment timeframe to visualize how small, consistent gains compound into significant wealth over time. This tool keeps you motivated during inevitable drawdowns by showing the big picture. Even a modest 2% monthly return compounds to substantial growth over years of disciplined trading.
Professional traders rely on calculators to remove emotion and guesswork from critical trading decisions. Here's why you should too.
In fast-moving markets, speed matters. Manual calculations in spreadsheets waste precious time and increase the risk of errors. Our calculators give you real-time results as you type, with no page reloads or waiting. Whether you're sizing a position before a breakout or calculating Fibonacci levels during a retracement, instant feedback helps you act decisively. The faster you can evaluate a trade setup, the more opportunities you can capture before they disappear. Every second counts when volatility spikes.
The difference between profitable traders and those who blow up their accounts is risk management discipline. The 1% and 2% rules aren't suggestions — they're survival strategies used by professionals to weather inevitable losing streaks. Our position size calculator makes these rules effortless to implement on every single trade. By automatically calculating the exact number of shares or contracts that align with your risk tolerance, these tools enforce the discipline that separates amateurs from professionals. Proper position sizing isn't glamorous, but it's what keeps you in the game long enough to profit.
Each calculator page includes comprehensive educational content explaining the formulas, strategies, and theory behind the calculations. You're not just getting numbers — you're learning fundamental trading concepts that you can apply across all your trades. Understanding why the Fibonacci 61.8% level is significant, or how to interpret a 1:3 risk/reward ratio, makes you a better trader. Every time you use a calculator, you're reinforcing best practices and internalizing the mathematical relationships that drive profitable trading. The calculators teach you to think like a professional.
Whether you trade stocks, forex, crypto, commodities, or futures, these calculators work across all asset classes. The mathematics of risk management, position sizing, and technical analysis are universal. A 2% risk rule applies whether you're trading Tesla stock, Bitcoin, EUR/USD, or gold futures. The Fibonacci sequence appears in price movements across every liquid market. Input your values in any currency or unit, and the calculators deliver accurate results tailored to your specific trading instrument. One toolset for your entire trading career, regardless of which markets you focus on.
Each calculator serves a specific purpose in your trading workflow. Here's how they connect to create a complete risk-managed trading system.
Determines how much to buy
Determines if trade is worth it
Confirms timing and momentum
Calculates expected outcome
Manages portfolio risk
Projects long-term growth
Example workflow: You spot a potential breakout setup. First, check RSI to confirm momentum. Use Fibonacci or Pivot Points to identify support/resistance levels for your entry and stop loss. Calculate your risk/reward ratio — if it's 1:2 or better, proceed. Determine your position size based on your risk tolerance. Before entering, verify the expected profit/loss after commissions. After the trade, track your drawdown to monitor portfolio health, and use the compound interest calculator to stay motivated by your long-term growth trajectory.
Even experienced traders make these costly errors. Our calculators automate best practices so you never fall into these traps.
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Yes, all calculators on QuantStock are completely free to use. There are no hidden fees, premium tiers, or usage limits. Every calculator is available instantly without any signup or payment. We believe powerful trading tools should be accessible to everyone, from beginners learning position sizing to experienced traders optimizing their risk management strategies.
No account is needed. All calculators are accessible immediately without registration. Simply visit any calculator page and start using it right away. Your inputs are processed entirely in your browser for instant results, and nothing is stored on our servers. This approach ensures maximum privacy and speed.
Our calculators use standard financial formulas and mathematical models widely accepted in the trading industry. The calculations are performed client-side in real time, giving you precise results based on the inputs you provide. The position size calculator uses the standard risk-per-trade formula, the Fibonacci calculator uses the classic ratios (23.6%, 38.2%, 50%, 61.8%), and the RSI calculator implements Wilder's original formula. All results are displayed with appropriate precision for trading decisions.
Yes, the position size, risk/reward, and profit/loss calculators work for any market including stocks, forex, crypto, commodities, and futures. The Fibonacci, pivot point, and RSI calculators are also market-agnostic and can be applied to any asset with price data. Simply enter your values in your preferred currency or units, and the calculator will give you accurate results regardless of which market you trade.
The position size calculator is essential for beginners. Proper position sizing is the foundation of risk management and helps ensure that no single trade can significantly damage your trading account. We recommend starting there before exploring other tools. Most professional traders follow the 1-2% rule, risking only 1-2% of their total account balance on any single trade. The position size calculator makes it easy to implement this rule consistently.
Position size is calculated using the formula: Position Size = (Account Balance × Risk %) ÷ (Entry Price - Stop Loss Price). For example, with a $10,000 account, 2% risk tolerance, $50 entry price, and $48 stop loss, you would risk $200 ($10,000 × 2%). The stop distance is $2, so your position size would be 100 shares ($200 ÷ $2). This ensures you only lose your intended risk amount if the stop loss is hit.
The 2% rule states that you should never risk more than 2% of your total trading capital on a single trade. This conservative approach to risk management ensures that even a string of losses won't devastate your account. For instance, with a $10,000 account, you would risk a maximum of $200 per trade. Many professional traders use an even more conservative 1% rule. This disciplined approach helps traders survive inevitable losing streaks and stay in the game long-term.
A good risk/reward ratio is typically 1:2 or higher, meaning you aim to make at least twice what you're risking. For example, if you're risking $100 on a trade, you should target a profit of $200 or more. With a 1:2 ratio, you can be profitable even with a 40% win rate. Many professional traders seek ratios of 1:3 or higher for swing trades. The risk/reward calculator helps you evaluate whether a trade setup meets your minimum criteria before entering.
Fibonacci levels are horizontal lines that indicate potential support and resistance areas based on the Fibonacci sequence. Traders use these levels to identify potential reversal points during price retracements. The key levels are 23.6%, 38.2%, 50%, 61.8%, and 78.6%. In an uptrend, prices often retrace to one of these levels before continuing higher. The Fibonacci calculator automatically computes these levels when you input the high and low price of a trend, saving you manual calculation time.
Maximum drawdown is the largest peak-to-trough decline in your trading account value during a specific period. It measures the worst-case loss scenario you've experienced. For example, if your account grew from $10,000 to $15,000, then dropped to $11,000, your maximum drawdown would be $4,000 (26.7%). This metric is crucial because it reveals the psychological and financial stress your strategy can create. Professional traders and investors use maximum drawdown to assess risk tolerance and strategy viability.