Forex Calculators: Lot Size

Forex Calculators is a trade-planning app for new and experienced forex traders who want to know the numbers before placing a trade. It brings position sizing, risk management, trade costs, price levels, account growth, and prop firm planning into one place. From a first lot size calculation to reviewing a plan across multiple markets, it helps make each decision easier to assess.

Position size and trade exits
• Position Size Calculator: Calculate lot size from your account balance, a risk percentage or fixed cash risk, and a stop loss in pips, price, or percentage of entry.
• Stop Loss & Take Profit Calculator: Start with your lot size. Enter a stop and target in pips, price, money, or percentage to calculate both price levels, the amount at risk, potential gain, and the risk-to-reward ratio.

You can count commission as part of the risk, so a loss at the stop stays within the amount you planned. The position size calculator has three layouts to suit how you work: Default, Paged and Ticket.

Risk and account growth
• Risk of Ruin Calculator: Estimate the risk of account ruin from your trading plan.
• Drawdown Calculator: See the effect of a losing streak and the gain needed to recover from it.
• Compound Profit Calculator: Explore how an account may grow when gains are reinvested.

Pip value and trading costs
• Pip Value Calculator: Know what one pip is worth at any position size, for every supported forex symbol.
• Margin Calculator: Calculate the margin a lot size requires at your account leverage.
• Profit & Loss Calculator: See the result between an entry and exit price in money and pips.
• Rebate Calculator: Calculate broker rebates from your trading volume.

Prop firm tools
• Pass Rate Calculator: Estimate your odds of passing a prop firm challenge with your trading strategy.
• Consistency Calculator: Use your best trading day and the firm’s consistency cap to find the daily profit range that keeps your account on track.

Chart levels
• Fibonacci Calculator: Calculate retracement and extension levels from a swing high and low.
• Pivot Point Calculator: Find support and resistance levels using Standard, Woodie, Camarilla, and DeMark methods.

Accounts and broker settings
Set up separate accounts for each forex broker, strategy, or prop firm challenge, each with its own currency, lot type, and commission cost. Switching the active account updates every calculator. You can also set spread, commission, lot size, and pip position by symbol, so position size, pip value, margin, and P&L calculations reflect the way you trade.

Markets
Calculate for major, minor, and exotic forex pairs, gold (XAUUSD), oil, indices such as US30 and NAS100, and crypto. Use near real-time prices or enter your own price for a scenario.

Everyday use
• Templates to save and reuse inputs
• Pinned results that stay in view while you edit
• Built-in number keypad
• Share results as text or an image
• Favorite calculators, in your own order
• Light and dark themes
• Phone and tablet layouts

Forex Calculators Pro version removes ads and includes unlimited accounts and templates, plus advanced analysis.

Forex Calculators app is for trade planning and education. Calculations and simulations are informational and do not provide financial or investment advice. Trading involves risk.

Questions, feedback, or a calculator you'd like to see? Email us.

Recent changes:
• Trading accounts: manage multiple accounts, each with its own settings.
• Templates: save and reuse your calculator inputs.
• New calculators: Pass Rate, Consistency and Rebate.
• Live results, pinned results, clearer results.
• Custom keypad built for faster number entry.
• Bug fixes and performance improvements.