Position Size Calculator

The position size calculator is the single most important tool in a serious trader's arsenal. Amateur traders pick lot sizes by feel or habit. Professional traders calculate their position size for every single trade ÔÇö and this tool makes that process instant.

Why Position Sizing Matters

Consistent profitability in trading is not about picking the right direction on every trade ÔÇö it is about surviving losing streaks and maximising your edge when conditions are favourable. Position sizing is how you control your risk per trade so that no single loss can destroy your account.

The classic rule is to risk no more than 1ÔÇô2% of your account on any one trade. With a $10,000 account at 1% risk, you risk $100 per trade. If you lose 10 trades in a row ÔÇö a realistic scenario for any trading strategy ÔÇö you lose $1,000, not $10,000. Your account survives and you can continue trading.

How the Formula Works

The core position sizing formula has three components:

• Risk Amount ($) = Account Balance ├ù (Risk % ├À 100)
• Pip Value = determined by instrument type, lot size, and entry price
• Lot Size = Risk Amount ├À (Stop Loss in Pips ├ù Pip Value per Lot)

For a standard FX major pair where the USD is the quote currency (e.g. EUR/USD, GBP/USD), the pip value per standard lot is always exactly $10. This is because 1 standard lot = 100,000 units, and 1 pip = 0.0001, so 100,000 × 0.0001 = $10.

For JPY pairs, the pip value depends on the current price. At USD/JPY of 150, pip value per lot = 100,000 ├ù 0.01 ├À 150 = $6.67. The calculator handles this automatically when you enter the current price.

For Gold (XAU/USD), we define 1 pip as $0.10 and use 100 oz per standard lot, giving a pip value of $10 per lot ÔÇö identical to a standard FX major.

Instrument Support

This calculator supports all major asset classes:

• FX Majors ÔÇö EUR/USD, GBP/USD, AUD/USD, NZD/USD (fixed $10/pip/lot)
• USD-Base Pairs ÔÇö USD/CAD, USD/CHF (variable pip value, requires entry price)
• JPY Pairs ÔÇö USD/JPY, EUR/JPY, GBP/JPY, CAD/JPY, AUD/JPY, CHF/JPY
• Gold ÔÇö XAU/USD (1 pip = $0.10, 100 oz/lot)
• Silver ÔÇö XAG/USD
• WTI Crude Oil

Using Presets

The preset system lets you save your most-used configurations. For example, you might save a "Conservative FX" preset with 1% risk and a "Gold Scalp" preset with 0.5% risk. Click the preset chip to instantly load those settings and calculate your position size in seconds.

Guest presets are saved to your browser. Logged-in users have presets saved to their account and available across devices.