Position Size Calculator
The position size calculator helps you plan trade size before entering a position. It turns your account balance, account currency, risk amount, stop size, symbol settings and exchange rate into a position size, so you can keep risk consistent across different markets.
Trading Vault includes common symbol templates, but you can also use a custom symbol when your broker's contract details are different or when the symbol is not already in the list.
Account settings
At the top of the calculator, set the account values used by every symbol card.
| Field | Description |
|---|---|
| Account Balance | The account size used to calculate percentage risk. |
| Account Currency | The currency your account is denominated in. |
| Account Value Risk | The amount you want to risk. |
| Account Percentage Risk | The percentage of the account balance you want to risk. |
Changing the account currency refreshes the exchange rates used by the calculator. Prices are requested when the page loads and then refreshed while the page is open.
Symbol cards
Each symbol card calculates one possible position size. Use this when you are comparing multiple trades or planning several setups.
| Field | Description |
|---|---|
| Symbol | Select a known symbol template or switch to a custom symbol. |
| Stop Loss Pips | The stop size measured in pips. |
| Stop Loss Amount | The stop size measured as a price amount for the instrument. Updating this recalculates the pip stop. |
| Pip Size | The smallest price movement used for the calculation. |
| Lot Size | The contract size used by your broker, such as 1,000 for a micro-lot or 100,000 for a standard forex lot. |
| Instrument Currency | The currency the instrument is quoted in. |
| Account Exchange Rate | The exchange rate between your account currency and the instrument currency. |
| Notional Amount at Risk | The risk converted into the instrument currency, including the risk per pip. |
| Amount | The calculated position size in lots, plus the account risk per pip. |
Custom symbols
Use Custom on a symbol card when the symbol is not in the template list or your broker uses different contract settings. Enter the symbol, quote currency, pip size and lot size, then confirm that the calculated risk matches your broker before placing a trade.
This is separate from the custom instruments managed in settings for trade entry and reporting. To manage journal instruments, see Instruments.
Multiple calculators
Use Add Symbol to create another symbol card. You can drag cards to reorder them and remove a card from its menu.
Logged-in users can keep multiple saved symbol cards. Visitors can use one local card without signing in.
Sharing the calculator
Use Share to copy a link to the position size calculator. The position size calculator link opens the tool page, but it does not include each symbol card's private saved state.
Check broker details
Trading Vault attempts to fill common symbol settings automatically, but pip size, lot size, contract size and quote currency can vary by broker and product. Always compare the calculator output against your broker's platform before entering a live order.
Templates
Streamline your trading journal with customizable templates for trade reviews, planning, and more. Save time and enhance your trading workflow.
Strategy Simulator
Use the Trading Vault Strategy Simulator to run Monte Carlo equity curve simulations with win rate, R-multiple, position sizing, target balance and risk-of-ruin assumptions.